Genuine Puzzles In Biology?

It doesn't. Try the following: No webpage found at provided URL: http://courses2.cit.cornell.edu/bionb221/WIM/resources/Cristol%20et%20al%20(1997)%20-%20Crows%20do%20not%20use%20automobiles%20as%20nutcrackers%20-%20Putting%20an%20anecdote%20to%20the%20test.pdfWhat I used there was [url]the_link_in_full[/url] which usually works better for complex urls.Even better is to use [url=the_link_in_full]short name[/url] which normally works without blowing the margins.Edited by nwr, : typo

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Jesus was a liberal hippie

I'm not a biologist, but it sure seems pretty obvious that it is the result of genetic change, rather than epigenetics. The measurement of genetic distance is done by comparing protein structure of different species, and the protein structure is encoded in the DNA. You didn't actually argue anything. You just asserted.If you believe that you have a good argument, start a thread on the question. I expect that the biologist members will be be able to refute your argument in pretty short order.

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Jesus was a liberal hippie

It is my impression that genetic distance is usually measured on proteins that are particularly unlikely to be affected by the kind of influences that you suggest.

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Jesus was a liberal hippie