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Archiver > DNA-R1B1C7 > 2007-06 > 1182187729


From: "R. C. Mac Donald" <>
Subject: [DNA-R1B1C7] Introduction
Date: Mon, 18 Jun 2007 13:28:49 -0400


Hello, and a big thanks to all those who have made this forum possible.

I'm M222+ with DYS390 =24, so I've found some of the discussions going on here particularly interesting, especially concerning the possibility of a subclade within R1b1c7 based on the value of 390 (and of other markers too, I presume). It appears to my amateur's eyes, though, that some of the confusion about precisely what marks one as a descendant of the "Ui Neill" kindred -- allele values, SNP test results or both -- and much of the unsound speculation that follows from it could be reduced by adopting a couple of simple steps.

First, it would be great if someone could construct a table of all R1b1c7s excluding the data for those markers known to be fast-mutating. This should make it easier to see clusters of surnames that match roughly the old Irish genealogies, as we should expect to see if we aren't completely wrong about this whole business.

Second, we should urge all the participants to have the SNP test to determine whether they are M222+; a simple estimate based on the STR numbers just won't do. In my own case, one of my closest matches on YSearch (I'm YPVPQ) is 41 out of 47 (with no marker off by more than one, for a genetic distance of 6) with a man named Sinor (9EUBC) who is H1a; this is closer than my match to most confirmed R1b1c7s. If we hadn't both been SNP tested, anyone looking at our numbers might place us in the same subclade.

R.C. Mac Donald


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