Re: Back-migrations to Asia (attention: Gisele)


G Horvat wrote:
> On 14 Jul 2005 09:35:56 -0700, "Lee Olsen" <paleocity@xxxxxxxxxxx>
> wrote:
>
> >Gisele,
> >
> >Got this over at the new Palanth Forum:
> >
> >"The oldest sample of human DNA ever isolated in the Americas is
> >providing a glimpse of how people spread across the land
> >masses..........
> >
> >The caveman belonged to 'lineage D', one of the five founding lineages
> >believed to have settled in the Americas more than 10,000 years ago.
> >Lineage D is thought to have originated in Asia, and researchers also
> >found a close match with a member of the Han ethnic group from Qingdao
> >in eastern China."
> >
> >Nature 07 July 2005, 436:162
> >
> >It says not peer reviewed yet, what do you think?
>
> I've been trying to get more information on it... Based upon what you
> quoted and this:
>
> "More than half of the matches were with members of the the Cayapa
> coastal tribe in Ecuador. Others were with members of the Chumash
> tribe of California,




I see Eshleman (2004: table 1) has Chumash (N 21)
Haplogroup A = .524
Haplogroup B = .000
Haplogroup C = .143
Haplogroup D = .333
Haplogroup X = .000

Language = isolate?
Reference Johnson & Lorenz (2003)



the Klunk Mound people in Illinois, the
> Tarahumara of Chihuahua in Mexico and the Mapuche and Yaghan tribes of
> Chile."
>
> I think the sequence which was obtained is the "additional founding"
> one described in this article (and, if so, that would be exciting as
> they are a bit of a mystery):
>
> Am. J. Hum. Genet., 65:519-530, 1999
> mtDNA History of the Cayapa Amerinds of Ecuador: Detection of
> Additional Founding Lineages for the Native American Populations
>
> O. Rickards,1 C. Martínez-Labarga,1 J. K. Lum,2 G. F. De Stefano,1 and
> R. L. Cann3
>
> http://www.journals.uchicago.edu/AJHG/journal/issues/v65n2/990321/990321.html
>
> A similar sequence was reported in the Qingdao (Shandong) sample and
> the Cayapa were originally reported to have no D sequences but later
> the ones classified as "Other" (21.7%) at Rickards' website were
> determined to belong to haplogroup D via RFLP analysis when they were
> found in other areas.
>
> http://www.uniroma2.it/biologia/lab/anthromol/appx2.html#tab1
>
> Similar sequences ere detected in Brazilian, Mexican, Mapuche and
> Andean samples as well as ancient Kaweskar & Selknam (100-400 BP)
> according to my records but there are not many in total.
>
> About 40% of the mtDNA sequences of Japan and Korea belong to
> haplogroup D but the situation is not quite as simple as the one
> described below:
>
> "The caveman belonged to 'lineage D', one of the five founding
> lineages believed to have settled in the Americas more than 10,000
> years ago."
>
> because D has numerous sub-groups. See Tanaka et al. What someone
> should do is determine is whether the D sequence of the Cayapa is
> closer to other Native American D sequences or Asian. Complete
> sequencing would probably be required for that.


Thanks Gisele.

http://www.usd.edu/esci/alaska/oykc.html


> Gisele

.

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