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Archiver > GENEALOGY-DNA > 2008-05 > 1211145354


From:
Subject: Re: [DNA] Y-DNA tEsting
Date: Sun, 18 May 2008 17:15:54 EDT



In a message dated 5/18/2008 12:05:39 P.M. Central Daylight Time,
writes:

http://freepages.genealogy.rootsweb.ancestry.com/~bonsteinandgilpin/dna/gpa.ht
m


Nelda,
The chart and the explanation were helpful. I take it, it doesn't matter at
what point the differences occur, but the number of steps difference (I know
they have to be on the same marker). That's why someone could match on 12
and be looking good, but then on 25 a few could start dropping out of the
kinship group depending on the number of steps differences per person.

We have 7 members of our Group. One participant did the 67, and two did 37
only and one did 25. All are exact matches at 12, there are two that are exact
matches at 37 (one being my male direct line cousin matching the 67 marker
participant). The only 25 marker test has a two step difference from my
cousin and his 37 marker match. The other 37 marker member had a one step
difference from the other two 37s and if I'm understanding correctly, a three step
difference from the 25 marker guy.

So then I read "Interpreting Genetic Distance Within Surname Projects", but
it was re 12 markers. Does the same rule apply if it's 67 markers? Does it
matter which marker it occurred on? Also, if you are one step distance at 12,
and then upgrade to 67 (or would you bother at that point), does the one
step lessen in significance. Or is one step, one step....one giant step
backward in kinship!

And with only seven members of our group, only one having done the 67 is
there any reason for my cousin to upgrade to 67? Will it tell more about the
relationship with the exact 37 marker match guy. To my knowledge none of these
guys have a paper trail back to the ancestor everyone is hoping for. We
sure don't. We are corresponding with one of them and he's very confident of
the ancestry, but with nothing to back it up. I can't even find where we
relate without going back 10 generations to our "supposed" ancestry.

I've emailed all the others, but with no response.

Thanks again,
Laura
Laura



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