Re: Beringian Standstill and Spread of Native American Founders

On Oct 26, 10:58 am, Melodious Thunk <thunk.melodi...@xxxxxxxxx>
wrote:
On Oct 26, 3:53 am, Tom McDonald <kilt...@xxxxxxxxx> wrote:



On Oct 26, 4:44 am, Doug Weller <dwel...@xxxxxxxxxxxxxxxxxxxxxxxx>
wrote:

" the initial founders of the Americas emerged from a single source
ancestral population that evolved in isolation, likely in Beringia....the
isolation in Beringia might have lasted up to 15,000 years. Following this
isolation, the initial founders of the Americas began rapidly populating
the New World from North to South America."http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1952074

Beringian Standstill and Spread of Native American Founders

PLoS ONE. 2007; 2(9): e829.
Erika Tamm,1 Toomas Kivisild,1,2 Maere Reidla,1 Mait Metspalu,1 David
Glenn Smith,3 Connie J. Mulligan,4 Claudio M. Bravi,5 Olga Rickards,6
Cristina Martinez-Labarga,6 Elsa K. Khusnutdinova,7 Sardana A.
Fedorova,1,8 Maria V. Golubenko,1,9 Vadim A. Stepanov,9 Marina A.
Gubina,1,10 Sergey I. Zhadanov,1,10,11 Ludmila P. Ossipova,10 Larisa
Damba,1,10 Mikhail I. Voevoda,10 Jose E. Dipierri,12 Richard Villems,1 and
Ripan S. Malhi13*

Now this is interesting. And it makes quite a bit of sense, when I
think about it.

The data doesn't account for the several outlier archaeological sites
older than 15,000 years ago, scattered throughout the americas. I
suppose those might be viewed as anomalies within a broader diaspora
that took place later, as implied by the mtDNA research.

How do archaeologists view these mitochondrial & y-chromosome DNA
studies? I guess I'm asking, are they held on a par with oral
traditions & mythology, able to give hints but not considered as solid
evidence?

The data was looking at Beringa, but the "outlier" communities are
accounted for with the chevron arrows at a circled 3.

Colours of the arrows correspond to approximate timing of the events
and are decoded in the coloured time-bar. The initial peopling of
Berinigia (depicted in light yellow) was followed by a standstill
after which the ancestors of the Native Americans spread swiftly all
over the New World while some of the Beringian maternal lineages-C1a-
spred westwards. More recent (shown in green) genetic exchange is
manifested by back-migration of A2a into Siberia and the spread of D2a
into north-eastern America that post-dated the initial peopling of the
New World.

.

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