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Re: Cecal Valves & Mitochondrial DNA

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Uploaded by on Dec 6, 2008

1. You are right. I misread the latin.

2. The articles discussed that latent DNA had this possible function on polymorphic traits. The only way that cecal valves could form by latent DNA is if the Italian Wall Lizard had a polymorphic trait for its intestinal structure, which it appears it does not.

3. Genetics have advanced a lot since Mendel's discoveries, but there is no evidence that such a thing happened with the Italian Wall Lizard.

4. The Mitochondrial DNA being identical shows that the Italian Wall Lizards with cecal valves were directed dissented from those 5 breeding pairs and were not the result of cross-breeding. Also this is not evidence for the coding for the cecal valve already existing because that coding would exist in the main double helix, not the Mitochondrial DNA.

5. Adaptation and Evolution are the same thing. They both result from the same process.

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  • Congratulations,you've just proven evolution to me,i'm tearing up everything i thought i knew. You've proven the first case of observed surviving morphological mutation by adding information to the gene. Because you say the gene did'nt exist,it must be true.

  • What is there to deny? The populations were split. They suffered different selective pressures. Evolution happened.

  • Once again, your ignorance on how evolution works does not count as a point against science.

    A lengthening a section of the intestine into a separate structure where plant material is slowed down is not an entirely new "functioning digestive organism" or like growing gills.

  • Over about 30 generations, those that were best able to compete in the terrain won. Those individuals with the mutations and natural variations that helped them best survived.

    Evolution, dear Watson.

  • Actually it doesn't, you are quoting it out of context because you didn't understand it or didn't want to. Extracted does not mean tested, the only dna tested was the mitochondrial dna. Decoding the entire genome of a species, which you claim they did, is not something you can do on a whim. That is why the human Genome project was such a big deal.

    And strawmaning what happened will not help your case. We had 5 mating pairs breed under harsh natural selective pressures.

  • A lizard chews on a stick and the complete blueprints materialize in the dna code to produce this valve? C'mon dude,think critically. As for saying they only tested mtc dna,the research paper differs from that view,I've quoted it twice now,it's there.

  • Apart from the facts in data,try to visualize what is proposed. Go outside and eat some fibrous vegetation. Do you honestly believe there's any chance you or your offspring will mutate a complete functioning digestive organism that no-one else has? I'm passionate about surfing and spearfishing,which means i spend a lot of time underwater,training my system to cope longer without oxygen. Will I or my kids ever come close to developing gills?

  • Further more, if this was a reactivated gene, then the populations would not be genetically identical because there would have to be a change in the dna to activate the dormant gene. And we have observed mutations that led to new traits in the lab. My favorite example is Nylonase.

  • DNA was extracted but was not tested. The only dna tested was the mitochondrial Dna to make sure that these lizards were in fact from those 5 mating pairs of Italian wall lizards.

    No. The valve does not already exist in this species. It exists in 1 percent of all lizard species put together.

    The species that had existed on the island was not the Italian wall lizard. The Italian wall lizards that were implanted on that island out competed them.

  • These are the the facts of this case,to call it fast paced mutative evolution is assumptive and speculative,by far not the best explanation of evidence available.

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