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Archiver > GENEALOGY-DNA > 2008-09 > 1220842940


From: "David Faux" <>
Subject: Re: [DNA] 9RA Autosomal Native American Marker
Date: Sun, 7 Sep 2008 20:02:20 -0700
References: <c8a.2907ae7b.35f4559b@aol.com>
In-Reply-To: <c8a.2907ae7b.35f4559b@aol.com>


I have created a Google Map to show the geographical distribution of the
19/20 variant of D9S1120. It is only a "rough draft" for now, but shows the
linear pattern being seen in most of the Northern Pakistani tribes and the
area which seems to have been a staging point for population movement to the
Americas via Beringia the Yakut and surrounding people. Then in the
Americas it has an interesting distribution pattern across the entire
northernmost tier, and south to the Yucatan Penninsula but not seen at all
in Central or South America - strictly North American. The lines are just a
join the dots exercise to show how it is "as if" the variant was following a
pathway to the east. There is no deviation from this line, for example no
one in all the European samples had either 19 or 20 (the largest repeat
value).

The URL is http://tinyurl.com/5ukqrl

What is presented is entirely tentative since we don't know if the variant
is identical by descent or identical by state. The only way to tell would
be to do a haplotype block analysis sequencing about 80 kb around the
marker. Apparently this has already been done and is likely to appear in an
upcoming publication. Hence nothing can be concluded at this stage except
it the present distribution is along a path that reaches from Africa through
the southern part of Central Asia to North America - very unusual if it is
just coincidence.
Please feel free to comment as I am unsure of what I am seeing. I would love
to find another "19" and see if we could get the area around D9S1120
sequenced.

David K. Faux.

On 9/6/08, <> wrote:
>
> In a message dated 9/6/2008 12:18:50 PM Pacific Daylight Time,
> writes:
>
> > It appears that this work may already have been done Ann. I think
> that once the data found in this poster from the AHSG Annual Meeting -
> Poster Listings is published we may have an answer:


http://www.ashg.org/genetics/ashg07s/f21508.htm

----------------------

That does sound promising. Keep checking Google Scholar with the keyword
D9S1120 for new citations about this marker (you can use the Advanced Search
to limit dates to 2008+).

Ann Turner

Ann

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