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  1. njlarsen

    What is a species?

    This should be detailed in methods section of each paper. The oldest version of all of this used a specific section of the Mitochondrial DNA which is where a 2% rule arose from, and was shot down many times since. In nuclear genes, it is often introns that are used, with the assumption that...
  2. njlarsen

    What is a species?

    I can tell you that misconception still is prevalent when the same students make it into medical school where I am teaching genetics. I may steal the example of polydactyly from you! Niels
  3. njlarsen

    What is a species?

    All of the above is true except that eye color is more complex than described. The paler eyed persons can be blue, gray or green, and there is a definite difference in how dark brown a dark-eyed person is (hazel, brown, almost black, etc. ) Therefore, the best description of eye color is...
  4. njlarsen

    What is a species?

    The spread in the population should happen at about the same rate, unless the effect of the mutation is very large on survival or fertility. The effect of the mutation should be detectable earlier with a dominant mutation. Niels
  5. njlarsen

    What is a species?

    The best estimate if i remember correctly is that each of us human beings are born with 20-40 sequence changes compared to our parents. Most of these means nothing to our outcomes, but occasionally there is one that does. But for the population, it’s a big difference between that being one in a...
  6. njlarsen

    What is a species?

    I am not sure I agree with the statement Jacana made, but the combined effect of mutation and selection is not random. With a small population, (and to my understanding, which might be wrong) a random but beneficial mutation has a much larger likelihood of becoming influential than if the...
  7. njlarsen

    What is a species?

    I am not working in this field either. The understanding I have of the 2% is that it was used as a rule of thumb for difference level in one particular sector of the mitochondrial genome. There has been a development so that these days, a result only including the mitochondrial genome will not...
  8. njlarsen

    What is a species?

    Everyone have promised that the WGAC will not come out with updates until their version 1 is ready. However, both IOC and Clements have published plenty of changes they say come from that collaboration, so I don’t get your point? Niels
  9. njlarsen

    What is a species?

    There has been, as already stated, many definitions made. Even with a definition, there is still the problem of not everyone reading it exactly the same way. Niels
  10. njlarsen

    What is a species?

    Would you be able to separate unequivocally the different warblers by finding just 1-5 bones? (It does not really matter if you think about separating members of the American Wood Warblers or members of genus Phylloscopus). I doubt it would be possible but I do not know. But my expectation is...
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