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Antievolution.org Discussion Board > From the Panda's Thumb > After the Bar Closes... > Genetic Surprise Confirms Neglected 70-Year-Old Ev

Henry J Posts: 5760 Joined: Mar. 2005 (Permalink) Posted: Sep. 11 2006,08:32    Genetic Surprise Confirms Neglected 70-Year-Old Evolutionary Theory Quote University of Rochester have discovered that an old and relatively unpopular theory about how a single species can split in two turns out to be accurate after all, and acting in nature. [...] The beginnings of speciation, suggests the paper, can be triggered by genes that change their locations in a genome. [...] Henry

Ichthyic Posts: 3325 Joined: May 2006 (Permalink) Posted: Sep. 11 2006,11:25    Wait... so this is about the effects of translocation? -------------- "And the sea will grant each man new hope..." -CC

jeannot Posts: 1201 Joined: Jan. 2006 (Permalink) Posted: Sep. 11 2006,12:34    This is a very particular case of speciation that can be assimilated to stasipatric speciation (maybe?). I don't think it's common. Ans as I understand it, its doesn't not involve a complete reproductive isolation. I didn't read the paper though.

Henry J Posts: 5760 Joined: Mar. 2005 (Permalink) Posted: Sep. 11 2006,12:51    Re "so this is about the effects of translocation?" Looks like an occasional side-effect of that to me (though I'm not a biologist, so I hope somebody'll correct that if I'm wrong). Re "I don't think it's common." So I gathered, since they've found evidence of other causes of speciation and hadn't really verified a case like this until now. Henry

Ichthyic Posts: 3325 Joined: May 2006 (Permalink) Posted: Sep. 11 2006,13:09    i guess the thing that irked me was the painting of translocations as potential mechanisms of speciation being "unpopular", when really, it was simply shelved until the technology caught up with theory. I don't recall that translocation was ever singled out one way or the other when I studied molecular and population genetics. Still, it is surprising that it took this long for somebody to document a good example. -------------- "And the sea will grant each man new hope..." -CC

stevestory Posts: 13407 Joined: Oct. 2005 (Permalink) Posted: Sep. 11 2006,14:15    It took that long because of the economics of DNA sequencing.

Ichthyic Posts: 3325 Joined: May 2006 (Permalink) Posted: Sep. 11 2006,14:52    you have a point there, but still, specific point mutations were identified as causal mechanisms before this. I guess it's just a conflux of things that were required that finally came together. -------------- "And the sea will grant each man new hope..." -CC

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