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Archiver > GENEALOGY-DNA > 2006-11 > 1164750399


From: "Eric Olson" <>
Subject: Re: [DNA] SNP and STR testing for R1a
Date: Tue, 28 Nov 2006 13:46:44 -0800


Lawrence,

Actually the (my) issue has nothing to do even with Haplogroups. It is a
haplotype issue. While it is true that SNP testing has confirmed that my
ancestor was R1a1, whenever I go to the databases I search the new data by
haplotype, not Haplogroup. That is how the search engines are set up.
That and searching by surname.

I appreciate that rapidly expanding families, like my own, (each generation
seemed to have about ten children) will have more cousins (matching) than a
family that is less fecund. Someone mentioned the other day that about 90%
of males of 200 years ago have daughtered out or had no offspring. That
obviously did not happen in my Carrel family. I suspect what I have is
rather more like a bottleneck. If my immigrant was the last of his family
in Europe then it is a real bottleneck, followed by a rapid family
expansion over here, and I would find nothing in Europe. But if he left
behind a brother or a male cousin who had offspring even unto this
generation, then I have a chance of finding him through STR testing which
would match by haplotype. Even on 12 markers..... with surname variant...

Meantime our 37 panel results, and SNP R1a1 results, are posted in the
YSearch database, and hopefully soon at SMGF. The Carrel family GEDCOM is
also on line at the RootsWeb WorldConnect Project. It is database
ericolson.

Cheers,
Eric

> [Original Message]
> From: Lawrence Mayka <>
> To: <>
> Date: 11/27/2006 2:32:10 PM
> Subject: Re: [DNA] SNP and STR testing for R1a
>
> > [mailto:] On Behalf Of
> >
> > Just because R1a is rare as compared to R1b, that doesn't mean
> > that it is rare in the
> > world and that a distant match should be considered closer,
> > just because there aren't many R1a in the database.
>
> First, we should clarify that the issue is not R1b vs. R1a per se, but
parts
> of the world that have undergone recent rapid population expansions (like
> western Europe during the Age of Imperialism) vs. those that have not.
>SNIP


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