GENEALOGY-DNA-L Archives

Archiver > GENEALOGY-DNA > 2008-05 > 1211100974


From: Mitzi* Bateman <>
Subject: Re: [DNA] Y-DNA tEsting
Date: Sun, 18 May 2008 01:56:14 -0700
References: <mailman.15807.1211090032.23553.genealogy-dna@rootsweb.com>
In-Reply-To: <mailman.15807.1211090032.23553.genealogy-dna@rootsweb.com>


In a message dated 5/17/2008 9:36:53 P.M. Central Daylight Time, writes: >A false positive at 12 markers generally means that you match to some one >who has a surname different than your surname. Both my Clark, Smith, and Brown cousins have 12/12 matches with the same surname that do not hold up at 25 markers.
I'm not looking up the exact numbers, but as I recall they only matched 18/25 with the other Clark group, for example. Thus, the match falls apart. There are at least several Clarks/Smiths in each distinct group. I have had some success by emailing those who are a 12 marker match to try to convince them to upgrade to 25. It seems a shame to buy 12 markers and be in limbo about matches. Several men still have not upgraded. So without a paper trail, we can't know if they are kin. In the Brown example, even a 25 marker match fell apart with an upgrade.

Mitzi
>So lets say you are doing a Smith DNA project. You do the 12 marker test. >When you get your results, there are six exact matches. You look at the names >and including yourself, there are five Smiths and one Jones. ??
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