America the Invincible

Yes, we are blessed with good geography, mostly. We do face some danger from environmental degradation with our overuse of carbon dioxide and methane gases, and our general neglect and abuse of the world ecology. The self centered approach to gathering and producing, while over reproducing to seven billion, is causing all the world's animal … Continue reading America the Invincible

So Why do Native Americans have so much Neanderthal DNA?

Recent discovery of tool manipulated Mastodon bones in California date some hominid activity in California to 130,000 years ago. Looks like this puzzle is coming into focus.

evolutionistx

Warning: highly speculative post ahead.

As I mentioned the other day:

Worldwide distribution of B006, (from Yotova et al. “An X-Linked Haplotype of Neandertal Origin Is Present Among All Non-African Populations,” Mol. Biol. Evol. 28 (7), 2011). Worldwide distribution of B006, (from Yotova et al. “An X-Linked Haplotype of Neandertal Origin Is Present Among All Non-African Populations,” Mol. Biol. Evol. 28 (7), 2011).

SNP PCA from Skoglund & Jakobsson’s “Archaic Human Ancestry in East Asia” (2011) SNP PCA from Skoglund & Jakobsson’s “Archaic Human Ancestry in East Asia” (2011)

(Please note that Africans do not have chimpanzee admixture, despite the labeling on the graph–no human group has chimp admixture, because chimps and humans have different #s of chromosomes, so even if you could get a successful cross, the resulting child would be infertile, like a mule. I assume the point of the chimp node is just to represent that which has neither Neanderthal nor Denisovan admixture, though of course there is the possibility of some other form of archaic hominin admixture in Africans.)

Anthropogenesis-DenisovaAlleleMap

So, Native Americans appear to have a ton of Neanderthal DNA. (Relatively speaking.)

Possibilities:

  1. It’s all…

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Would Aliens wipe us out if they found us and had the capability?

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Worst prediction ever made.

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