Posted by:
SL Cabbie
(
)
Date: August 23, 2019 06:20AM
He noted:
>>The science journal report on it came out in Nature back in 2014; it's still behind a paywall. Here is the link:
https://www.nature.com/articles/nature13673>>Most present-day Europeans derive from at least three highly differentiated populations: west European hunter-gatherers, who contributed ancestry to all Europeans but not to Near Easterners; ancient north Eurasians related to Upper Palaeolithic Siberians(3), who contributed to both Europeans and Near Easterners; and early European farmers, who were mainly of Near Eastern origin but also harboured west European hunter-gatherer related ancestry.
So I would say it's erroneous to claim they were "descended" from Siberians; rather they are "related," meaning a common ancestry and origin. That's consistent with a nagging memory I have which noted a connection between Europeans and Siberians. The "early European farmers" had Near Eastern ancestry, but it appears there was admixture with the W. Europeans, That's not surprising.
That stuff is a little fuzzy with me, but Simon Southerton just e-mailed me saying he would be in Zion in a month or two, and we will be getting together. Obviously he's far more knowledgeable on the subject of genetics than I am, and we'll be able to sort out what the literature and research says.
Finally, I've offered this caveat before: "Beware of British tabloid fare masquerading as journalism." From Simon's blog:
http://simonsoutherton.blogspot.com/2016/02/response-to-claim-13-of-native-american.html>>Hints of this group surfaced in an analysis of European genomes two years ago. Dubbed Ancient North Eurasians, this group remained a "ghost population" until 2013, when scientists published the genome of a 24,000-year-old boy buried near Lake Baikal in Siberia.
>>This individual had genetic similarities to both Europeans and indigenous Americans, suggesting he was part of a population that contributed to movements into the New World 15,000 years ago and Europe at a later date.
>>The paper causing the excitement was published in the Jan 2013 issue of Nature, one of the most prestigious scientific journals. The article in question was written by Raghavan et al. and entitled “Upper Palaeolithic Siberian Genome Reveals Dual Ancestry of Native Americans.” The paper would have gone unnoticed by Mormons had a National Geographic journalist not sensationalised it with the following hyperbole.
>>"Great Surprise"—Native Americans Have West Eurasian Origins.
Oldest human genome reveals less of an East Asian ancestry than thought.
>>Nearly one-third of Native American genes come from west Eurasian people linked to the Middle East and Europe, rather than entirely from East Asians as previously thought, according to a newly sequenced genome.
>>The major finding of the study is that the Siberian individual (MA-1) is not closely related to other Central and Eastern Asians (dark blue dots) and much more closely related to Native Americans (red dots). In addition, this Siberian appears to be related to people now living in Europe and Western Asia (yellow, light blue-green dots). This suggests that this Siberian individual's ancestors had migrated from Western Eurasia into Siberia, but when they arrived they did not mix very much with Asian populations living further east. Consequently, when some of this Siberian's descendants migrated on to the Americas, they didn't carry many DNA markers found in East Asian populations.
<<yawn!>>
Sorry, it's early in the morning right now; my friend also offered me a copy of the Nature paper, and I'll give it a go after I get some sleep.
Thanks for the thread.