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Ice Age Infant's Genome Fills in Native American Ancestry

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02-13-2014, 12:40 PM
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Hawkman
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Ice Age Infant's Genome Fills in Native American Ancestry



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About 12,600 years ago, when ice sheets still covered parts of North America, a baby boy lived, died and was buried in a rocky grave in a field in western Montana. A new whole genome sequencing of this infant — the oldest genome sequence of an American individual — identifies his community as ancestors of Native Americans who live on the continent today. “We found the genome of this boy is more closely related to Native Americans today than to any other peoples anywhere else,” Eske Willlerslev, of the University of Copenhagen, who led an international team on this study published in the Thursday issue of Nature, told reporters during a teleconference. The new study adds to archaeological evidence that Native Americans are descendants of humans that migrated from Asia through Siberia, and thrived across North America 13,000 years ago.
http://www.nbcnews.com/science/scien...ncestry-n28176

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02-13-2014, 07:27 PM
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No Fun Shogun
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Very interesting, but if I'm not mistaken it essentially corroborates what we already thought was the case for the origins of Native Americans, right?

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02-16-2014, 03:46 AM
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Eazy T
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Native Americans Have West Eurasian Origins

Native Americans Have West Eurasian Origins
http://news.nationalgeographic.com/n...eria-genetics/

I think it's pretty common knowledge within the science world that Native Americans came through the Bering Straight thousands of years ago and came from East Asian origins but according to this National Geographic article, experts have discovered that Native Americans have West Eurasian origins which is surprising.

I do know that within Native American communities that many Natives consider such findings false and many have considered themselves having coming from the Americas itself, not from the Old World. As someone with some native background, I find this article interesting.


Any thoughts on this?

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02-17-2014, 10:57 AM
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Chimaera
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Yes, some do not accept the Out of Africa theories, but it's generally accepted in scientific circles. The main other theory is the multiregional orign theory, which asserts that humans developed in similar periods in different locations. Much of the argument has to do with lack of some of the links and the different time periods people end up in certain locations. It also has to do with some egotistical issues based around not wanting to be from Africa.

What's newly being discussed and debated is more the idea that they may have been here earlier, or second, come from a different route (potentially across an ice cap).

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02-18-2014, 11:16 PM
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Quote:
Originally Posted by Chimaera View Post
Yes, some do not accept the Out of Africa theories, but it's generally accepted in scientific circles. The main other theory is the multiregional orign theory, which asserts that humans developed in similar periods in different locations. Much of the argument has to do with lack of some of the links and the different time periods people end up in certain locations. It also has to do with some egotistical issues based around not wanting to be from Africa.

What's newly being discussed and debated is more the idea that they may have been here earlier, or second, come from a different route (potentially across an ice cap).

There are several migration studies (mostly based on mitochondrial DNA mutation rates) that seem to establish that everyone outside of Africa today is more closely related than peoples within Africa (native Africans).

How to explain this variance despite the proximity and remaining closest to the human origin?

Basically that one initial group or wave emigrated from Africa, which then was the seed group for the rest of the human migrations that eventually worked their way into Europe, Asia, SE Asia, etc. Think of a tree with one large branch that produce smaller, distinct branches. The peoples that remained in Africa, in many cases, remained separate and distinct from each other genetically (no intermingling), hence the low level of "relationship" within the continent.

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03-01-2014, 03:04 PM
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Quote:
Originally Posted by Eazy T View Post
Native Americans Have West Eurasian Origins
http://news.nationalgeographic.com/n...eria-genetics/

I think it's pretty common knowledge within the science world that Native Americans came through the Bering Straight thousands of years ago and came from East Asian origins but according to this National Geographic article, experts have discovered that Native Americans have West Eurasian origins which is surprising.

I do know that within Native American communities that many Natives consider such findings false and many have considered themselves having coming from the Americas itself, not from the Old World. As someone with some native background, I find this article interesting.


Any thoughts on this?
IIRC the National Geographic geneographic project had shown that that during the last ice age there were 2 routes into America. 1 being the bearing straight and the other being along the ice across the Ocean. Some of the findings had shown that Natives that crossed the bearing straight tended to go north and became the Inuit and also settled to the West of the Rockies all though some did cross the Rockies and some also continued all the way South into South America. Now the genetic info also linked an ice age group in Europe to some Natives in NA as well.

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