GENEALOGY-DNA-L ArchivesArchiver > GENEALOGY-DNA > 2007-07 > 1184007966
From: "Lowe DNA" <>
Subject: Re: [DNA] Are 67 marker tests being adequately promotedbyProjectAdministrators?
Date: Mon, 9 Jul 2007 14:06:06 -0500
I advise my three sets of project participants to upgrade from
25 or 37 markers to 67 when they have found "close DNA" marker
matches that they believe might be kin.
And also request them to have them have SNP tests if their haplogroup
is not solidly rooted in a particular haplogroup.
[mailto:]On Behalf Of Robert Stafford
Sent: Monday, July 09, 2007 12:49 PM
Subject: Re: [DNA] Are 67 marker tests being adequately promoted
The primary reason would be to look for branch tags. There is more detailed
information about the genealogical application in this thread:
The panel may not decrease TMRCA enough to make it worthwhile for most
people to use it for determine relatedness. I calculated a decrease from 20
to 16 generations for the 97.5% cumulative probability from a 37/37 match to
a 67/67 match.
Dennis Wright <> wrote:
So unless there is a good reason I wonder at the worth of extending to 67.
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