Hawks on Adaptive Introgression

John Hawks, along with Gene Expression regular Greg Cochran, has published a paper (PDF) on adaptive introgression in human evolution. In case the jargon is too much, we're talking about the caveman gene. Both Greg and John have blogged the paper. Check out what John says about mtDNA:

However, there have been a growing number of examples of adaptive introgression between different natural populations as well. The use of more nuclear markers has begun to uncover many, but importantly many species have adaptive introgression of mitochondrial DNA.
[emphasis from original]

Adaptive introgression of mtDNA sure would screw up any demographic inferences one makes using mtDNA polymorphism. Adaptive introgression of any single marker would screw up demographic inferences. Yes, it's another reason for people to stop using mtDNA, and mtDNA alone, to study population history.

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This is more for google, but if you missed anything, you should check it out. Here is a replay of the introgression & Neandertal related posts....
From John Hawks: I heard from a long-time correspondent this morning concerning introgression of microcephalin from archaic humans. I'm not sharing the whole message, but I thought it would be worth paraphrasing a key point for some thought.
I was going to continue with my review of chapter 5 of Evolutionary Genetics: Concepts & Case Studies today, but time does not permit.
About a month ago I posted quite a bit about Neandertal introgression into modern humans.