Archiver > GENEALOGY-DNA > 2008-02 > 1203929779

From: "Tim Janzen" <>
Subject: Re: [DNA] Comparison of deCODEme results for the Y-chromosome ofR1b1c7and R1b1c9 individuals
Date: Mon, 25 Feb 2008 00:56:19 -0800
In-Reply-To: <001301c8770a$cdf198c0$6402a8c0@DW1>

Dear David,
This is very interesting. Note that Eldon Wade also has the
rs34276300 SNP. Like Watson and Ventor, he is also S21 positive. Thus
those who are S21 positive are batting 3/3 for the rs34276300 SNP. We need
more results within R1b1c (M269+) and R1b1c9 (S21+) to help sort out where
rs34276300 is positioned on the Y SNP tree.
Would the people who shared their Y SNP results with you be willing
to share all of their Y SNP results publicly? It would be helpful if we
could begin to create a public database of these Y SNP results from deCODEme
(as well as 23andMe) so that we can compare results within the various
subclades as more and more data becomes available. Perhaps such Ron Scott
or someone else would be willing to host such a database on their web page.
Can you comment on the fact that you were comparing 858 separate
SNPs when there apparently are 1418 Y SNPs on the Illumina chip as per the
file at Why is there
a discrepancy as to the total number of SNPs tested? Are some of the rs
numbers in that file not actually Y SNPs?
Tim Janzen

-----Original Message-----
[mailto:] On Behalf Of David Wilson
Sent: Sunday, February 24, 2008 9:29 AM
Subject: [DNA] Comparison of deCODEme results for the Y-chromosome of
R1b1c7and R1b1c9 individuals

Through the courtesy of two individuals who provided me with their deCODEme
results for the Y chromosome, I have been able to compare Y-DNA SNPs for
R1bc7 and R1b1c9 exemplars.

Of the 858 separate loci, 855 are identical. The three at which a difference
is observed are:

rs20321 (= M222, indicator for R1b1c7 when derived)
rs16981293 (= S21/U106, indicator for R1b1c9 when derived)
rs34276300 (to my knowledge, no shorthand label exists)

For the third SNP, the R1b1c7 individual has the ancestral state, and the
R1b1c9 individual shows the derived state. Comparison of the Crick and
Venter data show that they too have the derived state.

It would be interesting to know whether the third SNP is restricted to those
who are derived for S21/U106, or whether it is a unifying SNP that will
combine R1b1c9 with other subhaplogroups of R1b1c.

David Wilson

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