MIGRATION PATTERNS FROM DNA

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Bill Arnold

MIGRATION PATTERNS FROM DNA

Legg inn av Bill Arnold » 27 nov 2007 17:29:01

Hi, Gen-Medievalers :0

DNA, down the road will assist even gen-medieval work:

Bill

*****
http://news.yahoo.com/s/afp/20071127/ts ... ymigration

Gene study suggests Native Americans came from Siberia

WASHINGTON (AFP) - A US genetic study bolsters claims that Native Americans are descended from one
migrant group that crossed a lost land link from modern Siberia to Alaska -- not waves of arrivals
from Asia, as rival theories say.

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The new study by the University of Michigan, published Monday, examined genes of indigenous people
from North to South America and from two Siberian groups, the university said in a report
introducing the research.

Analysis found one unique genetic variant widespread across both the northern and southern
American continents -- suggesting that all Native Americans were descended from a single group,
not various ones as the rival theory holds.

This variant "has not been found in genetic studies of people elsewhere in the world except
eastern Siberia," the report said.

"If there were a large number of migrations, and most of the source groups didn't have the
variant, then we would not see the widespread presence of the mutation in the Americas," Noah
Rosenberg, a geneticist who worked on the study, was quoted as saying.

Anthropologists and archeologists have long argued over whether Native Americans are descended
from migrants who crossed by land to the northwest 12,000 years ago, or waves of arrivals by sea
and land from elsewhere in Asia and Polynesia beginning up to 30,000 years ago.

The land link has long since disappeared, giving way to the Bering Strait -- a narrow sliver of
sea separating the far northwestern US state from far eastern Russia.

The study also found that genetic diversity increased the further away people were from the Bering
Strait -- as would be expected if the migration were "relatively recent," the report said, citing
the authors of the study.

It is published in the specialist journal PLoS Genetics.

Copyright © 2007 Agence France Presse. All rights reserved.




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Gjest

Re: MIGRATION PATTERNS FROM DNA

Legg inn av Gjest » 27 nov 2007 17:54:02

On Nov 27, 8:26 am, Bill Arnold <billarnold...@yahoo.com> wrote:
Hi, Gen-Medievalers :0

DNA, down the road will assist even gen-medieval work:


Bill, could you do us a favor. (This is a serious request, not a
criticism, and applies to everyone). If you wish to post on something
new, please draft a new message, rather than hitting reply to an
existing message on another topic. Threading is used by both USENET
(soc.gen.med) and the GEN-MED archives. This links related posts
together and lets you see who is responding to whom. When you respond
with something unrelated, even if you change the Subject: line of the
post, it is still recorded as being part of the same thread. Thus
this post on migratory patterns will be viewed and archived as part of
the discussion of the Order of Charlemagne, which will make it harder
to find, and defeats the whole purpose of threading to begin with.
Simply start a brand new message, and send it off to the same address.

taf

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