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Archiver > GENEALOGY-DNA > 2004-08 > 1091465048


From: "Steven C. Perkins" <>
Subject: Re: [DNA] Markers YCA II a&b
Date: Mon, 02 Aug 2004 11:44:08 -0500


Of the persons in the Parkins Perkins study there are 13 with YCA II a and
b results, 8 are 19/21; 2 are 19/22; and 3 are 19/23.

Steven C. Perkins


At 03:28 PM 8/2/2004 +0000, you wrote:
>In the available research literature it is clear that YCAIIa,b is
>extremely stable - at least in relation to certain haplogroups.
>R1b is virtually all 19,23. R1a, which has been the subject of three
>studies (Passarino et al., 2002; Quintana - Murci et al., 1999; Passarino
>et al., 2001), is largely 19,23. What is particularly interesting is that
>the 2002 study found that YCAIIa,b is bimodal in Norway for R1a. 9 of 17
>had the motif 19,23 which is virtually universal in all regions of the
>world studied to date (studies do not include Central or East
>Asia). However 7/17 Norwegians had a 19,21 motif which is virtually
>unknown elsewhere.
>The research literature would not support your assertion that this marker
>complex is volotile - quite to the contrary.
>David.
>
>
>--
>Dr. David K. Faux
>P.O. Box 192
>Seal Beach, CA 90630
>
>
>www.davidkfaux.org
>
>
>-------------- Original message --------------
>
> > Most of the cousins in our Renshaw project who tested on 37 markers match
> > exactly on YCA II a&b. They have values of 19, 23.
> >
> > One man, however, tested as 15, 19. See our webpage at
> > http://www.renshawdna.com/charts.htm and look at the pink block, fourth
> line,
> > labeled GAR. You
> > will note that I reversed the values for his results at marker YCA II
> a&b so
> > that
> > he is shown as 19, 15, giving him a one-step mutation at YCA II b using
> the
> > infinite alleles model. This reversal is legitimate, I believe, as the
> order
> > of the results on these two markers is based solely on convention?
> >
> > Because GAR is a fifth cousin to the man labeled CPR, whom he only matches
> > 34/37 even using the infinite alleles model on YCA II b as above, we
> tested GAR
> > at DNA Heritage as well as at FTDNA. You may be interested to know that
> with
> > the exception of TAGA H4 and GATA H4, which should have a difference of
> 1 at
> > the two labs and did, the numbers matched exactly on all markers that were
> > measured by both labs.
> >
> > We have learned a few things from this exercise:
> >
> > 1. The labs are accurate
> > 2. Fifth cousins can match only 34/37.
> > 3. YCA II a&b is much more volatile than we might suppose. It should be in
> > red on the FTDNA charts
> >
> > Lest any of you think that perhaps the paper trail is wrong and the two
> > cousins are not really related, note that they both have the odd value
> of 20 at
> > marker #570. Comparatively few R1b's have this value, so we use it to
> confirm
> > relationship within our project.
> >
> > Comments, please?
> >
> > Eleanor Gordon
> > Renshaw Y-DNA Project Co-Administrator
> >
> >
> > ==============================
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> >
>
>
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