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Archiver > GENEALOGY-DNA > 2003-07 > 1058727092


From: David Faux <>
Subject: Re: [DNA] R1b to R1b8
Date: Sun, 20 Jul 2003 11:51:33 -0700 (PDT)
In-Reply-To: <1f1.d750fba.2c4c2405@aol.com>


Ann: Likely your posting below will be of particular interest to very large numbers of Listers - considering the frequency of R1b.

I take it that at present there is no way to know whether I (having a R1b haplotype) am R1b8 or whatever since no UEP testing was done. Is it true also that none of the commercial labs we use are set up to measure UEPs (only SNPs)? If, as you say, R1b8 is found predominantly among the Basque people, then the UEP information and a further categorization of our generic R1b classification may provide useful clues to our ancient European ancestry.

David.

wrote:
In a message dated 07/20/03 7:13:40 AM Pacific Daylight Time,
writes:

> As I understand the mutation from R1b to R1b8, about 3000 years ago there
> was a single mutation at DYS# 391 from a value of 11 to 10, this created R1b8.

The single mutation which defines R1b8 is not one of the DYS Short Tandem
Repeat (STR) markers, which can change up and down every few hundred years or so.
R1b8 is defined by a mutation called SRY-2627, which is an example of a
Unique Event Polymorphism (UEP). UEPs are so rare that they are treated as if they
occurred only one time in all of human history. R1b8 appears to be associated
with the Basque region.

Where did you find the statement about DYS391? There might be a difference in
frequency for DYS391 values, but it wouldn't be definitive.


> I notice in the scientific paper by Bosch et al, 2001, p1026 states that
> H103 (YCC hg R1b8) is equivalent to Y-chromosome haplogroup H22.

You can find a chart which gives the equivalents for old nomenclatures, as
well as the UEPs which define each haplogroup, at the Y Chromosome Consortium
site:

http://ycc.biosci.arizona.edu/nomenclature_system/fig1.html

Ann Turner - GENEALOGY-DNA List Administrator
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