Wednesday, May 23, 2012

EVOLUTION #4 - CONFUCIUS, ONE PICTURE IS WORTH TEN THOUSAND WORDS

And yet some still asking...!

EVOLUTION #3 - GALILEI, AND YET IT MOVES

Galileo Galilei now seen as a revolutionary figure from the scientific point of view, it was in its time, a blasphemous that dare to say the most ridiculous thing, that earth was not in the center, but the sun instead. Nowadays, the Red Queen paradigm is the same as that centuries ago, where clamming diversity as the reason of Sexual Selection, is the same as it was, that earth doesn't move, and yet it moves!

In a not so much recent study, Synchronous Aggregate Growth in an Abundant New Ediacaran Tubular Organism, Mary L. Droser and James G. Gehling, argues to have identified the Tubes of Funisia dorothea as the first evidence of sexual reproduction. As it's put it next:
"A recent discovery made international headlines when published in Science in March 2008, announcing the discovery of the origin of sex. The paper, by Mary Droser and Jim Gehling, described a new kind of organism from the Ediacara site, which they named Funisia. Funisia was a worm-like tubular organism, the fossils of which are found abundantly at the Ediacara sites, so much so that different stages of its growth can be studied and measured in detail.

Droser and Gehling identified that these organisms were budding off ‘sprats’, or juveniles from the adults, which were all at a similar growth stage. Hence instead of shedding or budding asexually (shedding identical clones of itself), as expected for primitive organisms of this period, it is likely that the ‘sprats’ developed all at the same time due to an act that began them all: sex.

Put simply, if they were budding asexually then a wider range of sizes would be expected in the juveniles. The fact that they were always at the same size suggested an act that was timed, a mutual shedding of sperm and eggs into the water, such as occurs for corals.
" - From Cosmos

 In the Abstract of the previously referred article, it's written:
"The most abundant taxon of the Neoproterozoic soft-bodied biota near Ediacara, South Australia, occurs as clusters of similarly sized individuals, which suggests synchronous aggregate growth by spatfall. Tubes of Funisia dorothea gen. et sp. nov. were anchored within the shallow, sandy sea bed and lived in dense, typically monospecific concentrations. Tubes were composed of modular, serially repeating elements. Individuals grew by adding serial elements to the tubular body and by branching of tubes. Their construction and close-packed association imply likely affinity within the Porifera or Cnidaria. These data suggest that several of the most successful marine invertebrate ecological strategies known today were in place in Earth's oldest known metazoan ecosystems before the advent of skeletonization and widespread predation." - From Synchronous Aggregate Growth in an Abundant New Ediacaran Tubular Organism

Well, it's obvious that all this synchronous is argued as the timing, and not as the form, of Sexual Reproduction. As it's said, you simple have groups of organisms that started their growth at the same time (same size individuals). However, all the Similarity, the Clustering, and the Synchronous nature of Sexual Reproduction should ring a simple idea, that this Clustering is the true Origin of Species. And yet it clusters!


BBC - David Attenborough's First Life - See 46:16.

Sunday, January 15, 2012

EVOLUTION #2 - MENDEL, THE WHYS GUY

In this post I will materialize the importance of the Abstraction’s Environmental Process referred in the previous post. One of the ways this process become a reality is trough the chromosomal Crossing Over, as part of the Meiosis event.

In 1866, Mendel published his now famous paper entitled Experiments in Plant Hybridisation. In this time, evolutionists were attached to the blending kind of hereditary. This blending paradigm is one of the main reasons to the continuous view of evolution. Mendel, and his laws, brings a discrete and independent view of hereditary. However, in the same way only in 1900 his work was really appreciated (more than 30 years later), nowadays; the continuous view of evolution hasn’t yet been substituted by the discrete one. There are always people that simple don’t get it, and get stuck in details, in the following writing, details like not fully independent, or exotic disputes about other details, don’t change the point taken.

The Mendel laws are the base of the Hardy–Weinberg equilibrium, and because of that, this equilibrium, are only applicable to Eukaryotes and not to Prokaryotes. Now, what do you call, to the idea that all life is equally evolving, in a continuous and unstopping way like in Prokaryotes, and then, your examples are invariably involving Eukaryotes? You call it a delusion. Now, what it happens, when you ask to a deluded, if; are we still Evolving? If for the deluded, evolution is an unstoppable continuous process; he has the problem in conciliating the evolutionary force with his unstoppable and continuous concept. This difficulty makes the deluded a treasure hunter, where the treasure is the motive of the Natural Selection bias. If evolution has to be, the motive has to be found. As if it were not enough, you have the sticking species, and the respective speciation process undermining the continuous view of evolution. Now the delusion becomes denial, the denial of species’ existence, transformed in nothing more than a classification.

There is a question that until now hasn’t been well answered. What is the inbreeding effect on the genome quality? Charles Darwin was very concern with this issue, because he rightly suspected, that he and his family was victim of it. In a study entitled Was the Darwin/Wedgwood Dynasty Adversely Affected by Consanguinity?, by Tim M Berra, Gonzalo Alvarez, Francisco C Ceballos, it’s concluded that:
“(...) the high childhood mortality experienced by the Darwin progeny (...) might be a result of increased homozygosity of deleterious recessive alleles produced by the consanguineous marriages within the Darwin/Wedgwood dynasty.”

The experienced mortality wasn’t due exclusively to contagious diseases as many try to prove, but also to pure congenital ones, like the case of the last sun of Charles Darwin named Charles Waring. Many still see this as lack of diversity, as a mean to response to fast genetic change in infectious diseases. The name of this view was coined the Red Queen’s hypothesis.

Here I will give other explanation for the importance of Crossing Over, and show you that the so called arms races has nothing to do with it.

First of all, we will consider the two laws of Mendel. Those laws are:
  1. Law of Segregation – every individual possesses a pair of alleles (assuming diploidy) for any particular trait and that each parent passes a randomly selected copy (allele) of only one of these to its offspring;
  2. Law of Independent Assortment – separate genes for separate traits are passed independently of one another from parents to offspring.
Another thing to have in mind in the next simulations is that we will only consider the crossing over process in meiosis, and consequently; we will always consider haploid genomes for the sake of simplicity.

To help us to see what happens, we will construct an analogy with a picture made by pixels. In the next picture we have our Little Joe. We will consider the genes as the colors in each pixel of his picture. In this way, our analogy has the following meanings:


Original Picture of Little Joe

From the previous full picture we may zoom in to visualize each pixel.


Zoom of the original picture

Next we have the generation tree for the simulation:


Stacking tree per generation

For the first simulation, we approach the merging view of the 19th century for heritably (continuous process), staring with the creation of 16 pictures resulted from the insertion of random noise, each one with the same parameters, in the original picture (Genome) for the 1/16 generation. The first obtained picture, similar in noise to the other 15, looks like this (first arrow):


Sample 1 of 16 from the generation 1/16

For the 1/8 generation, and following the generation tree, we will evenly stack each picture of the 1/16 generation by a methodology similar to focus stacking, resulting 8 pictures with reduced noise. The first obtained picture, similar in noise to the other 7, looks like this (first one of the 1/8 generation):


Sample 1 of 8 from the generation 1/8

Repeating the process for the generation 1/4, the obtained picture, similar in noise to the other 3, looks like this (first one of the 1/4 generation):


Sample 1 of 4 from the generation 1/4

Repeating the process for the generation 1/2, the obtained picture, similar in noise to the other one, looks like this (first one of the 1/2 generation):


Sample 1 of 2 from the generation 1/2

Finally, we get a single picture for the 1/1 generation, with extremely reduced noise comparably with the one on the 1/16 generation.


Final sample from the generation 1/1

In conclusion for this first simulation, the merging process clearly has the ability to reduce noise, however, this ability tend to lose strength for each new generation. This has to do with the merging nature itself. While merging we are making averages, and as many averages we make, we never get the real color of the original picture despite the approximation to with. The maximum that the merging process can provide is an Asymptote to the original color.


Animation from generation 1/16 throughout 1/1

Now we will take a different approach. We will take for granted the species. Species in the next simulation will be represented by the original picture of the Little Joe. Species, a product of Sexual Selection, is seen here as a target of systematic bombardment made by noise. In this way, our analogy has the following added meanings:
  • Original picture – Species;
  • Mask – Threshold between positive and negative allele’s feedback;
  • Mask’s white pixel – Fixed allele;
  • Mask’s black pixel – No fixed allele.

In this simulation we drop de continuous view of the noise, and adopt a Yes or No kind one. In this way, we create a Mask for the picture where is marked if there is or isn’t noise (no fixed allele). For this mask, we use the color white for the pixel without noise, and black for the pixel with noise.

Using the first 16 pictures of the previous simulation, we produce for each one of them, the white and black mask. This mask, and the resultant picture, similar to the other 15, looks like this (first arrow):


Mask sample 1 of 16 from the generation 1/16

As you can see, this mask doesn’t represent a uniform distribution of random noise; however, because it still represents a random situation it makes no difference for this simulation.

You immediately note an important difference, now, due to this discrete approach, the noise looks like sand in a surface, it almost seems like something you may literally clean instead of dimming it.

For the staking process, we consider the product of the Mask’s pixels, so, the white pixel represents 0 and the black one 1. For each pixel we have the following stacking results:

Bellow we will review the mixed staking in more detail, for now we just accept things as they are.
Applying the stacking process, the first obtained Mask, and the resultant picture, similar in noise to the other 7, look like this (first one of the 1/8 generation):


Mask sample 1 of 8 from the generation 1/8

Repeating the process for the generation 1/4, the obtained Mask, and the resultant picture, similar in noise to the other 3, look like this (first one of the 1/4 generation):


Mask sample 1 of 4 from the generation 1/4

Repeating the process for the generation 1/2, the obtained Mask, and the resultant picture, similar in noise to the other one, look like this (first one of the 1/2 generation):


Mask sample 1 of 2 from the generation 1/2

Finally, we get a single Mask and the resultant picture for the 1/1 generation, with practically no noise comparably with the one on the 1/16 generation.


Final mask sample from the generation 1/1

Unlike the merging simulation, here there is no continuity restriction, and so, convergence can be total without any kind of Asymptote, and more importantly, there is no losing strength in reducing noise.


Animation from generation 1/16 throughout 1/1

As told before, we considered the result of a mixed stack, Heterozygous, as always White (0). You may think that it is an over simplification, however is not far from reality.

Firstly, while a no fixed allele will frequently encounter a mixed stacking (Heterozygous), a fixed allele, on the contrary, it will frequently encounter an equal allele (Homozygous), so, in terms of chances and accordingly with the first law of Mendel, a no fixed allele sees his probabilities of being carried on reduced by 1/2 per generation (Exponential decay), while the fixed one, only sporadically gets in that situation.

In top of the exponential decreasing probability, we have the Natural and Sexual Selection, each one with the following three kinds of feedback:
  1. Positive Feedback – Increases offspring relatively to the average;
  2. Neutral Feedback – Maintains offspring relatively to the average;
  3. Negative Feedback – Decreases offspring relatively to the average.
Both Negative Feedbacks, for Natural or Sexual Selection, are the last hope killers for the “lucky” noise, which one, albeit the odds managed to remain in the genome, sees its diminished odds become even more reduced next to nothing.

In conclusion, the exponential decay of the probability of fixation for a no fixed allele, associated with the negative feedbacks of Natural and Sexual Selection, is a good base to consider that the result of the crossing over between a fixed and no fixed allele is the fixed one, mainly if the no fixed one has no evolutionary advantages (noise).

However, knowing that we are considering haploid genomes, we should not view these values as exact ones. For instance, for a new allele get fixed in a population without any inbreeding, the positive feedback of Natural Evolution had to be such, to the point of canceling the Exponential decay previously referred. In this way, that positive feedback would need to produce more than 2 times the average offspring per generation, so that 2*1/2 becomes 1 (same as the fixed allele), and to compensate the initial negative feedback from Sexual Selection.

Now you may ask, but it’s not possible the existence of Positive Feedback from Sexual Selection for the newcomer allele? For the right answer, we need to realize that the positive feedback of Sexual Selection is in the direction of the existing genome that defines the species. As you saw in the last simulation, the mask is the result of the difference between the original picture and the one with the noise, and in this way, Sexual Selection is attached to a referential, something that doesn't happen with Natural Selection. So, if positive feedback for Sexual Selection is relative to an existing referential, only Natural Selection has the ability of giving Positive Feedback for newcomers.

Some of you are in this moment thinking about the peacock's tail, and making the question if that is not an excellent example of Positive Feedback of Sexual Selection for newcomers. Thirst of all, you have to have in mind that tails per se are common in birds, so tails have a Positive Feedback from Natural Selection. What we are discussing is the ornament not the tail, and the ornament may well be explained with correlation. So, if a trait, any trait, positively correlates with some other trait or traits, which have Positive Feedbacks, either from Natural or Sexual Selection, with time, and only through Natural Selection, that trait becomes a fixed trait. When it becomes a fixed trait, and only then, it may receive Positive Feedback from Sexual Selection, simply because it becomes part of the new existing referential (species). In this way, you may think in beautiful bird singing, vibrant feathers colors, and stunning flowers as exclusive products of Natural Selection.

Giving a step forward, we will approach in detail the issue of Consanguineous or Inbreeding reproduction. Since Adam and Eve times, inbreeding reproduction becomes an inevitably, however, we will not explore the Adam and Eve reality; but instead, we will try to understand what we mean by the inexistence of inbreeding, and then, its degree.

Without inbreeding, our heritage (past generations) would follow an exponential Power of Two, and after few generations, would become greater than the existent population. To visualize this reality we will use the demography evolution of Portugal expressed in the next picture.


Numeric simulation with Portuguese population

Using a generation length of 30 years, by the year of 1410 any Portuguese born after 2010 would be relative to all the Portuguese population previous to 1410! This young Portuguese would be a direct descendent of figures like the Henry the Navigator, or even his great father, John of Gaunt. In the next graphics is possible to visualize the interception point, where the population needed for a perfect non consanguineous reproduction meets the real one.


Graphical simulation with Interception point (1410)

Now that it’s clear that inbreeding is an inevitable reality, it’s time to understand its impact in the Crossing over process. More, the real question is not, what is the impact of inbreeding, but instead, what is the impact of inbreeding’s degree. For this degree we use the distance in generations. For example, in case of brothers we have 1 generation distance, in case of first cousins 2 generations, and so on. Using our generation tree, we may construct a table with the impact of consanguineous reproduction, and see the impact in terms of genetic sampling.


Generation tree considered in the simulations

In the last simulation a consanguineous reproduction can be seen as a branch removal. From the way the simulation was carry on, based on the product of the Mask’s pixels, is applicable the concept of Absorbing element, where the White (0) pixel is the Absorbing element. One of the properties associated with the Absorbing element, is that the operation order doesn’t maters, the result is the same, the absorbing element White (0). This means that the reduction of branches is equivalent to the reduction of samples. In the simulation there were 16 samples of masks, as you can see in the next picture, depending on the generation where we have inbreeding; there is a reduced new set of samples. For instance, in the case of an inbreeding in the 1/2 generation, half of the samples are removed from the equation, meaning that only 8 samples become stacked, the same effect as stopping the reproduction series in the 1/2 generation instead the 1/1.


Unremoved noise due to consanguinity

It is possible to see in the image above; that inbreeding in the generation 1/2 has an impact in the picture, maintaining some noise that otherwise would have been removed.

Other conclusion is possible to make, as you can see in the next picture, inbreeding loses its influence in an Exponential decay way as far from the 1/1 generation it occurs. For instance, a single consanguineous has an influence of 2/16 in the 1/8 generation, and an influence of 4/16 in the 1/4 generation, or in other words, the inverse of the possible number of no consanguineous mating for a given generation.


Impact of inbreeding’s degree

Consanguinity is not worldwide equally distributed, some countries, like India and Pakistan, have high rates of consanguinity. The “rat-people” is a crude example of a mal functioning cross over, something promoting fixation of alleles that otherwise would never become fixed.


Worldwide distribution of consanguineous marriages

It’s now possible to conclude that there isn’t any kind of arms race, what we have is deleterious mutations that became easily fixed due to redundant crossing over in the respective locus. These deleterious mutations, like many other symptoms, weaken the immune system to the point of being exploited by infectious diseases. They work in somehow like AIDS, making people much more likely to get infections, including opportunistic infections and tumors that do not affect people with full working immune systems.

There is another problem with the arms race of the Red Queen’s paradigm, that problem is called blood type. Blood types varies in worldwide distribution, with A blood more frequent in Europe, Australia and North America, B blood, more frequent in Asia, and O blood bore frequent in Latin America. If this is considered an arms race, you have to consider races also the result of an arms race, because the distribution of blood type isn’t very different from other racial traits, neither in time or space. In that sense, the black skin of an African person would have to be seen as an arms race against the sun. The problem is that, like in races, there aren’t significant variances in time and space to attribute to other reasons than Natural Selection. However, this arms race is still argued as the reason for Sexual Selection, something essentially different from Natural Selection.

If blood type is no more than a polymorphism, like skin color, and if blood types play an important role in the protection from infectious diseases, there is little credit to be given to Arms Race or any other thing but the old and simple Natural Selection. What you really have in constantly change that crossing over works against it, is not any kind of virus, or bacteria, it’s instead, the old and simple noise. This noise, the product of Dissipation, root of all environmental processes, undermines the complexity in life and the possibility of greater genomes. Crossing over, and the consequent Speciation, is the working solution that no Eukaryote was ever able to be truly free of.


Dependence stacking of environmental processes

So, what crossing over really is? Crossing over is the instrument of the Environmental Abstraction process. This abstraction becomes the new entity subject to evolution. With abstraction, organisms were drained of protagonism, given to the new concept of Species and its Sexual Selection mechanism. This way, species become the real subject of Natural Selection and the consequent Evolution, or simple putted, Strains gave place to Species.

If materialization was needed, you just need to remember the heritage’s Power of Two exponential process. This form of heritage, only possible with crossing over, works like a stairs that connects species with individuals; turning them, not into children of parents, but into children of species. So, for the question, what makes us human? We may simple answer, the Species does.


Stairs connecting species with individuals

In conclusion, there are those who ask how, and those who ask why, Mendel, was one of the last kind. I will end this post with a simple sentence to bear in mind.

“The HOW represses, the WHY frees.”


Prokaryotes vs. Eukaryotes, NS - Natural Selection, SS - Sexual Selection

Sunday, January 8, 2012

EVOLUTION #1 - DARWIN, THE PRIEST OF THE PRIESTS

In this post, I will try to give a new look about life, as a mere result of environmental processes, and not, as a cause of those processes that make life a glorious and almost religious thing.
 
There is one thing that many of the Evolution Priests do forget. That thing is that Evolution is just one process like many others. But because there is a need of Evolution Dissemination, processes like Selection, Mutation and Speciation are wrapped inside the Evolution process. It is possible Evolution without Mutation? No, obviously not. However, you don’t see any one spreading the word Mutation like Evolution (click for 10-fold Google results). So, we end up with the ridiculous thoughts, that Selection makes Evolution, that Mutation is part of Evolution, that Speciation is just a classification, and, consequently, that Migration is no more than a mere curiosity, without a real relationship to Speciation.

Darwin suggested as the perfect spot for the source of life, a warm little pond. Until now, many Evolutionary Priests suggested the miraculous spark for life origin. However, in a landmark discovery, chemist John Sutherland has created the conditions in which the building blocks of RNA, one of the key molecules of life and the probable precursor to DNA, assemble themselves naturally. The problem until now relates to the view of a spontaneous life generation from the ideal environment conditions, like a prebiotic soup of chemicals. If you think a little, this has to do with the view of evolution, that evolution is a product of life, and in this way, you are unable to view evolution previous to life, you are unable to see evolution as a natural process predicted by environment and completely independent of life.

The solution became simple if you get rid of the life restriction, and realize that the complex molecules necessary to life became “cooked”, by important and intermediate steps resulting in new increased complex molecules, instead a single step from a group of ingredients. However, the Evolution Priests don’t predict Evolution outside the biological world, at least in a serious way.


Revealing the Origins of Life (Jul 08, 2011)

There is another reason for this kind of Evolutionary culture. The English culture is made of sounding figures, figures that give extreme force to the Anglo Saxon view of the world. There are three particular figures that any one recognizes. Those figures are:

  1. William Shakespeare;
  2. Charles Darwin;
  3. Isaac Newton.

Albeit they being old in history, we still regard them as contemporary. It’s frequently the references to William Shakespeare in movies and other media. Charles Darwin is referred as a “know all” about evolution, and the fader of all answers in biologic world, at least in conceptual terms. And last but not least, Isaac Newton gave origin to the Apple marketing machine, the biggest Pop culture icon of our times. We may compare those with other similar figures, but with much less recognition. Those figures are:
  1. Miguel de Cervantes;
  2. August Weismann or Gregor Mendel;
  3. Gottfried Leibniz, Rudolf Clausius or Ludwig Boltzmann.
The English culture is like a species, which abstraction needs its eternal figures albeit their real significance, because the real important thing in a species is its survival, not the truth.
Now we will try to put some order in the extended expressions that are interpreted as the same, when in reality, aren’t. Using our English culture analogy, we may ask for the differences between the follow expressions:
  • England;
  • Great Britain;
  • United Kingdom;
  • Common Wealth.


The Difference between the United Kingdom, Great Britain and England Explained

For the majority, the previous expressions basically means the same, because is in the best interest of the English culture that, for instance, England means the same as Common Wealth, and so the ambiguity. Why? Because bigger is better.
The Evolution Priests are equally interested that other expressions became misunderstood with Evolution, and the common people interpret the following expressions has basically meaning the same:
  • Mutation;
  • Replication;
  • Selection;
  • Speciation;
  • Migration.
For instance, if Evolution is the product of Mutation, becomes hard to make Evolution the big deal, unless, Mutation is referred as an instrument of Evolution, and not as a distinct process.

Now we may try to interpret those processes in a distinct way, in an isolated way, and give to them a place like Evolution has. Recognizing that Environment Processes are external to life, we may figure out a layout for those Environment Processes. This layout is a rude expression of what may be, however it gives a good idea of how much it’s possible to realize thinking in distinct environmental processes.


Rude layout for Environmental Processes

Thinking in distinct environmental processes, may give you the answer for why life started only once. The Saturation process may have been triggered only shortly after the Replication one. Thinking in terms of processes you are able to make good analogies, like Internet, or Mobile Phones or even human languages. After the adoption of a particular protocol, the following Saturation makes impossible the appearance of a new one. It will be like a country enacting and replacing an official language.

To end this post, I will explain why the use of the expression Evolution Priests. To start with, I quote the Selfish Gene book of Richard Dawkins in the end of the Immortal coils chapter. He states:
It is good to get into the habit, whenever we are trying to explain the evolution of some characteristic, such as altruistic behavior, of asking ourselves simply: ‘what effect will this characteristic have on frequencies of genes in the gene pool?’” – Richard Dawkins.

Now, what is wrong with the previous quote?

In fact, nothing is.

Now, what is wrong with the next one?
It is good to get into the habit, whenever we are trying to explain the selection of some characteristic, such as altruistic behavior, of asking ourselves simply: ‘what effect will this characteristic have on frequencies of genes in the gene pool?’”

Equally nothing wrong!

We may rephrase with the words, mutation, replication, speciation, migration, and so on, that albeit a different meaning, still has nothing wrong with it.

My point is the following, surely Evolution makes part of genes and life, however, there are other processes equally important and distinct that genes depend on. And more important, in the universe of genes, not all of them have all the processes, for instance, not all life have speciation, because not all of them have greater genomes, because the speciation process has the simple effect on genes of increasing its quantity in the genome (complexity). However, for an Evolution Priest, everything becomes reduced to Evolution.

 
Genome effect of Environmental Processes

Saturday, July 2, 2011

The Selfish Gene - Not so much!

For those that see The Selfish Gene of Richard Dawkins as a master piece in the subject of Evolution, they must review his opinion. There are some things that kill all the reasoning of it. And some of those things are:
  1. When writing about Why Sex evolved in the Chapter Immortal coils, he states:
    "This is an extremely difficult question for the evolutionist to answer. Most serious attempts to answer in evolve sophisticated mathematical reasoning. I am frankly going to evade it except to say one thing."
  2. And the one (big) thing he has to say is:
    "Whether or not it benefits all the rest of an individual's genes is comparatively irrelevant. Seen from the selfish gene's point of view, sex is not so bizarre after all"
  3. A good question is that, if it is irrelevant, why bother so much with the esoteric asexual examples after all?
  4. Plus, there is a misconception between Group Selection and Species Selection in the Chapter Why are people?:
    "The quick answer of the 'individual selectionist' to the argument just put might go something like this. Even in the group of altruists, there will almost certainly be a dissenting minority who refuse to make any sacrifice. [It] If there is just one selfish rebel, prepared to exploit the altruism of the rest, then he, by definition, is more likely then they are to survive and have children. Each of these children will tend to inherit his selfish traits. After several generations of this natural selection, the 'altruist group' will be over-run by selfish individuals, and will be indistinguishable from the selfish group. Even if we grant the improbable change existence initially of pure altruistic groups without any rebels, it is very difficult to see what is to stop selfish individuals migrating in from neighbourning selfish groups, and, by inter-marriage, contaminating the purity of the altruistic groups."
  5. By definition? He completely forgets to mention Sexual Selection, and he is blind to see that, by definition is of the domain of Sexual Selection, not Natural Selection. So, it not matters if some one is selfish, what it matters is if some one is attractive and nice to the Species, or by other words, less degenerative of its own species. This is the Species Selection that he constantly avoids to mention it, maintaining the clumsily Group Selection argument easy to disrupt;
  6. His book has 81 results for "Natural Selection" and 10 results for "Sexual Selection" a ratio of 8,1 times, almost the same we get in a Google search ("Natural Selection" vs "Sexual Selection")! Now, do you still have doubts about the reality of the existing Status Quo?
  7. The despair is so great, that for the extraordinary difference in size of the genome, he says that is a noncoding DNA, without never realize, or explain, why that hypothetical difference between Eukaryotes and Prokaryotes remains nevertheless.
In conclusion, Dawkins is a fanatic fellow when it came to genes as the absolute Unit of Selection.


I'm absolutely right!

Friday, June 10, 2011

Species' Definition - A materialistic one

There is the conviction that species are a mere classification, and all of the meanings for the word Species maintain that logic. One of the meanings is the following:
"A group of organisms capable of interbreeding and producing fertile offspring."
The problem with this definition is that does not put Species, in terms of meaning, at the level of Organism. Being a group of organisms it turns out to be a mere classification, and that is the main problem with this definition, its lack of substance.

I defend that Prokaryotes represent a Two-Layer scheme while Eukaryotes a Three-Layer one (see The Truth about Species! - Part 3 - Inductive Nature).

What are those three layers? Simple, the existing two of Prokaryotes plus one, Species. In this Scheme we have, Environment, Species and Organism.


Prokaryotes vs. Eukaryotes, NS - Natural Selection, SS - Sexual Selection

Now, you may notice that Environment and Organism have a materialistic definition, an organism is any contiguous living system, and an Environment encompasses all living and non-living things occurring naturally on Earth or some region thereof.

Question, why there isn't a materialistic definition for Species? Because most evolutionists refuse to see Species as something equally materialistic as an Organism.

Now we will try to construct our own materialistic definition:
"Species, a product of meiosis, is the proxy between Environment and Organism."
And in which way Species is a proxy? In the way that evolution doesn't work on Organisms, instead, it works on this Proxy that we call Species.

Seeing Species as something real, something materialist, the definition is as natural as Environment or Organism.

The view of this Proxy makes it clear that, albeit some traits of Eukaryotic organisms increase the difficulty of reproduction, like the evolution of the intercrossing, they are the best prove that Evolution works on Species and not on Organisms. When it comes to Organisms, they only relate with this Proxy in a form of Sexual Selection. In conclusion, there isn't Natural Selection or Evolution for the Eukaryote Organism, the Species is there precisely for that.

If you still insist in exotic examples, like Asexual Species, note that Asexual Species are an impossibility, or if you prefer, simple unnatural to Eukaryotes.

"I have repeatedly stressed how difficul it is to state something general about asexuals that with reasonably accuracy will hold for all or at least most of them. One such generalization is, however, of great importance. It says that asexual lineages are, on average, shorter lived in evolution than sexual lineages. This conclusion is based on the fact that asexuality appears constantly among sexual eukaryotes, while no reverse evolution – from full asexuality to sexuality – is normally to reckon with. Nevertheless, the eukaryotic tree remains dominated by sexuality. This situation would not hold unless asexual lineages have a shorter lifespan on average than sexual lineages. The relative disadvantage of asexuality is directly seen in the eukaryote tree in all its immensity, where sexuality dominates all major branches. The same logic applies, however, also to every derived lineage, down to for example the water-flea Daphnia pulex that generate asexuals at a considerable rate and still retains sexuality as their basic reproductive mode (Paland et al. 2005; see Chapter 15)." - in Lost Sex, The Evolutionary Biology of Parthenogenesis


Tree of Life with Genome Size - Dismissing Asexual Species

Saturday, May 28, 2011

New species evolve in bursts - One more to the score

I'm starting to be like Darwin, like when people talk about Men from Apes.

When I say that there aren't Asexual Species, people normally forget that I'm taking from granted that only Eukaryotes have species.

Albeit the complains, again, and again, evidences fall in my hands telling me that I'm right, only Eukaryotes have species, because only them have Sexual Selection.

I found this more two for my increasing score:
  1. New species evolve in bursts;
  2. How many species of prokaryotes are there?.
The first one tells you that Sexual Selection promotes Punctuated Equilibrium, like my same conclusion in my post Inductive Nature, and the second one ends up making the following statement:
"Thus definition of species on this basis is not adequate for assessing the functional diversity of prokaryotic communities."

This last one, subscribes my post Why Sex, where I say:
"The placed pieces of the classic view do not solve the puzzle, because they are wrongly positioned in the next way:
  1. Speciation (all organisms);
  2. Sexual selection (some species)
Those pieces need to bee changed, like this:
  1. Speciation (some organisms);
  2. Sexual selection (all species)."
It's amazingly how Classical Evolutionist are starting to became like Evangelist, with Natural Selection exclusivity has his GOD.


Refusing the Status Quo is the fastest way to deprecation.

Monday, May 23, 2011

Important FAQs about Evolution - Fighting the Status Quo

Here are some FAQs for some important questions about Evolution:
Q: Why Sexual Reproduction?
A: Because it's the mechanism of speciation.

Q: Is there Asexual Species?
A: No, because sex is the mechanism of speciation.

Q: What undermines Complexity in Natural Selection?
A: Entropy.

Q: What liberates Natural Selection from Entropy?
A: Sexual Selection.

Q: What supports Evolution of Complexity with Sexual Selection?
A: Induction.

Q: Is the Evolution of Peafowl's tail a good example of Sexual Selection?
A: No, Evolution is Unachievable trough Sexual Selection.

Q:
What is the Cause of the Cambrian Explosion?
A: Cognition (Nervous Systems) plus Sexual Selection.

Q: Why evolutionists love to speak of Natural Selection but usually omit Sexual Selection?
A: Because in general they support Natural Selection exclusivity.

Q: Why in Google "Natural Selection" returns 10 times more results than "Sexual Selection"?
A: Because the Status Quo is committed in the Natural Selection exclusivity.

Q: Why in Google "Evolution" returns 40 times more results than "Natural Selection"?
A: Because it's just one word.

If you have more questions please ask...!


Relax Darwin, it's also Natural Selection!

Saturday, May 14, 2011

Eukaryotes from Prokaryotes and the Greatest Lie - For the Folks

In the People arena, there is the supposed knowledge about evolution that has been used as argument for a serie of events that intended to prove, or justify. People think that, for example, a systematic selection in an competitive environment is a good example of Natural Selection. This kind of survival of the fittest is in my opinion, the Greatest Lie that persists, because is one that supports as Natural something that isn't.

In a complex environment, or reality, Natural Selection isn't the systematic, or competitive actor, Sexual Selection is. So, in a complex world, systematic selection is Sexual Selection accordingly to a logic, or abstraction, that in reality, is the only product of the so argued Natural Selection. However, in the best interest of that logic, or abstraction, it's important that the competitors, or elements, fighting for its acceptance, believe in their competition as a sort of Natural Selection, were in fact, is Sexual Selection. This is the picture of the Greatest Lie.
"After the origin of eukaryotes the next transition suggested by Maynard Smith is the origin of sex. Sexual reproduction, the sharing of genes between two individuals to produce offspring, is normally viewed as a primary character trait of all eukaryotes. There are many eukaryote species that can reproduce asexually, but there are only a few that must reproduce asexually, and in those cases it is usually clear that they stem from sexual ancestors - They have given up sex, rather than never having had it in the first place." - Tim Lenton, Andrew Watson, 2001, Revolutions that Made the Earth
Next we will see the differences traditionally used to distinguish eukaryotes from prokaryotes listed by Mayrd.

PropertyProkaryotesEukaryotes
Cell size
Small, ~1-10µm Large, usually 10-100µm
NucleusAbsentPresent
Endoplasmic membranes
AbsentEndoplasmic reticulum, golgi apparatus present
DNASingle circular chromosome, not complexed with proteins. No introns, few transposable elements
Multiple linear chromosomes contained in nucleus. Many introns, transposable elements
CytoskeletonAbsentPresent
OrganellesAbsentPresent (mitochondria, hydrogenosomes, chloroplasts, etc...)
MetabolismDiverseMostly aerobic
Cell wall
Protein wall in (eu)bacteria
Cellulose or chitin, none in animals
Genetic recombination
Lateral gene transfer
Meiosis/sex
Cell division
Binary fission
By mitosis
FlagellaRotatingUndulating cilia
RespirationOn membranes
Mitochondria
Environmental tolerance
Wide range of temperatures, pressures, chemical tolerance, resistance to desiccation.
Narrower range of tolerance
Adapted from: Mayar, 2002, What Evolution Is

If you are one of those strongly committed to the Natural Selection dogma, you should read the following sentences:
"If sex did not reduce variation, then there would be as many species as there are individuals" - Charles Darwin (1838-1839)
"Sex usually results in extreme slowing of evolution" - Root Gorelick Henry H. Q. Heng, 2010.Sex Reduces Genetic Variation: A Multidisciplinary Review
"We reviewed arguments from a diverse assemblage of biologists—ecologists, cancer biologists, population geneticists, paleontologists, molecular biologists, genome theorists, epigeneticists—who implore that sex reduces genetic variation." - Root Gorelick Henry H. Q. Heng, 2010.Sex Reduces Genetic Variation: A Multidisciplinary Review
In the end, it will be obvious that Sexual Selection is like a wedge, maintaining the achieved evolution and encapsulating the entropy of Natural Selection inside the organism's layer. In this way, the achieved evolution is protected at the cost of wasted organisms, washing away any entropy from Natural Selection. However, this view stills very oppressed, because Natural Selection exclusivity is the spine of the contemporaneous philosophy, serving the status quo.

But this is supposed to be for the Folks' eyes, right? Yes, it is. And so, I draw my own table to make clear what is and what isn't Natural Selection in a complex environment, a table that works as an instrument to avoid folks being fools.

Property
Natural Selection
Sexual Selection
Subject
SpeciesOrganisms
TimingA posteriori
A Priori
Frequency
SporadicSystematic
Effect
Diversity
Sameness
Vulnerability
EntropyInduction
UniverseLogicalPhysical
EvolutionAchievableUnachievable
ConceptDynamicStatic
Action
Liberal
Repressive
Expression
Cooperative
Competitive
Interaction
Complementary
Segregative
Condition
Unstable
Stable
NatureRandomnessIntentional/cognitive
Natural or Sexual Selection, the good question.

The first question you should make about yourself is, are you an organism? Now, even if you made part of a very strict military selection, for a special force, you may be made to think in that selection as Natural Selection. But think a little more, where is the Logic? Is the military soldier the Logical or the Physical element? The answer is simple, the soldier is the physical element. But where is the logical one? Well, the process of military selection itself is the logical element. Is the criteria for the "good soldier" that in the future will be Natural Selected, not the soldier itself, the last one was Sexual Selected in the past, in a systematic way!

Now the Greatest Truth. Your condition of organism, no matter the species you belong to (obviously one), puts you in a state of systematic testing. Because you belong to the physical world, evolution for you is an unachievable thing, the only thing that achieved something was the Species. This Greatest truth is a dramatic one when it comes to organisms, it's the drama of systematic provision of your good will for what the species it's concern, a provision that isn't meant to be definitely achievable, except for the logical element, the species itself.

But there is more, it's not only how the organism is made, it's also what that same organism wants. Think a little, what is connecting organisms that makes them wish essentially the same? Do you think that, because something is thought in an common way turns out to be a fact? Think in optical illusion, is not that common in humans? The conclusion is obvious, your will comes from the species, your feelings of reward or regret are constructions that are to much common to be really yours.

For those organisms that make questions about the meaning of life, and about the path to happiness, here is the answer:
"Life is waste, and happiness relief."
Is this pessimist? Well, all depends, if are the species commanding the organisms or vice versa. Until now, the species have been ruling with no exception.


A Good Soldier like a Good Specimen under the Species' Eyes

Monday, January 17, 2011

Sex is the mechanism of speciation! - For the Septicks

Some people truly become annoyed with the following What Ifs:
  1. What if speciation is more than an handy classification?
  2. What if speciation is an acquired skill?
  3. What if Sexual Selection is the mechanism of that skill?
Those people say that I'm completely wrong, and that I do not understand what a Species is. In their opinion:
"Species are only a human construction that is convenient for us humans to understand the world, but which has no special biological value."
However, I show some quotes that surely those people are unaware:
"The appearance of sexual reproduction i.e., syngamy, genetic recombination and meiosis has long been considered a major evolutionary threshold, giving rise to a fundamental increase in variation (Schopf et al. 1973), a novel ability to remove deleterious mutations (Muller 1964), and indeed ‘‘true’’ species and speciation (Stanley 1975). The presence of at least two distinct spore-producing phases in Bangiomorpha, and their close comparison to sexual phases in modern Bangia, presents a convincing case for eukaryotic sex by at least ca. 1200 Ma." - in Bangiomorpha pubescens n. gen., n. sp.: implications for the evolution of sex, multicellularity, and the Mesoproterozoic/ Neoproterozoic radiation of eukaryotes
and another one:
"Sexual reproduction predominates among organisms mainly because most evolutionary change is concentrated in speciation events, and asexual species cannot speciate in the normal sense. Asexual clones seldom diversify rapidly enough to overcome normal rates of extinction. In contrast, phylogenetic groups of sexual species (clades) commonly develop broad, heterogeneous adaptive zones rapidly enough to ensure survival." - in Clades versus clones in evolution: why we have sex
and last but not least:
"For over a century, the paradigm has been that sex invariably increases genetic variation, despite many renowned biologists asserting that sex decreases most genetic variation. Sex is usually perceived as the source of additive genetic variance that drives eukaryotic evolution vis-à-vis adaptation and Fisher's fundamental theorem. However, evidence for sex decreasing genetic variation appears in ecology, paleontology, population genetics, and cancer biology. The common thread among many of these disciplines is that sex acts like a coarse filter, weeding out major changes, such as chromosomal rearrangements (that are almost always deleterious), but letting minor variation, such as changes at the nucleotide or gene level (that are often neutral), flow through the sexual sieve." - in Sex reduces genetic variation: a multidisciplinary review


Modern mature (multiseriate) Bangia atropurpurea in transverse cross-section. A–C, Asexual/vegetative filament showing the radially arranged wedgeshaped cells. D, Portion of female plant showing the 8–16 fertilized carpospores produced by each wedgeshaped cell. E, Portion of male plant showing the ca. 128 spermatia produced by each wedge-shaped cell. Redrawn from Garbary et al. 1980.

No special biological value? Are you kidding?

References:
An Open Letter about Natural and Sexual Selection by Rui Monteiro - 2010
The Truth about Species! - Part 1 (Why Sex)
The Truth about Species! - Part 2 (Cambrian Mystery)
The Truth about Species! - Part 3 (Inductive Nature)
The Truth about Species! - Part 4 (Entropic Nature)