Archiver > GENEALOGY-DNA > 2010-03 > 1269896510

From: "robert mclaren" <>
Subject: Re: [DNA] Questions about alternate means of searching DNA Genealogy
Date: Mon, 29 Mar 2010 17:06:19 -0400


I do have a few suggestions for you as you wait for a match. First, if you
have only tested to 25 markers, I suggest that you upgrade to at least 37
and best would be 67 markers. Matches at 25 can fall apart with more
markers. Second, I suggest that you test some more in your known family.
How many sons did your ancestor, adopted in ca 1860, have? You can derive
his DNA signature by testing descendants of three of his sons. You cound
as one. So, I suggest that you test a straight-line male descendant of two
other of his sons. With those three results, you can derive your
ancestor's DNA signature. YUou do this by examining every marker, one by
one. Where the three agree, than that is the ancestor's value for that
marker. If one disagrees, then the ancestor's value would be that of the
other two.

In doing this second suggest, you remove any recent mutaitons. When I did
this, testing my two brothers, I found that I have two mutations. My
father's DNA signature is that of my two brothers, not mine.

Yours aye,

Bob McLaren
Genealogist, Clan MacLaren Society (based in Scotland)
Chairman, Genealogy Committee, Clan MacLaren Society of North America
Administrator, Clan MacLaren Surname DNA Project (Worldwide)
Administrator, Lindo, da Silva, and Braham Surname DNA Projects (all
Member, Association of Professional Genealogists
Member, Genealogy Speakers Guild

> [Original Message]
> From: Johnathan Clayborn <>
> To: <>
> Date: 3/29/2010 3:24:54 PM
> Subject: [DNA] Questions about alternate means of searching DNA Genealogy
> Hello list!
> I'm new, this is my first post here.
> I have a rather baffling conundrum and I was wondering if anyone out there
> may be able to help shed some light on the subject.
> Back in December of 2006 I took a Y-Chromosome test at the bequest of the
> Claiborne DNA Project. Naturally we all expected the results to return
> nothing abnormal. We were shocked and dismayed to discover that my genes
> not match the Clayborn's....not even remotely.
> Upon further review of my genealogical records we discovered where the
> was made, our ancestor was adopted by the Clayborns cir. 1860. His mother
> was a 'Christina Croy', but we can not find out anything further about
> Having encountered a brick wall I began scouring the DNA databases online
> for a possible match, something that would give me a clue as to where to
> search next. I've checked Y-Base, YHRD, Genebase, SMGF, and YSearch. None
> these databases has a match better than 22/24 (which according to what
> said on the site puts our MRCA out about 744 years).
> I have 3 distinct markers in my first 24 marker set that happen in less
> 1 percent of the population (according to SMGF). Whenever I can find a
> (If that's possible), it should be very easy to prove a match as my genes
> are so odd.
> Does anyone have any other resources that I can incorporate into my
> Additionally I was thinking about my adopted ancestors, the Clayborns, one
> of their ancestral branches died out completely. What if the same thing
> happened to my blood ancestors? Would it be possible to track my DNA on
> Paternal line through other means? This not knowing is making me crazy.
> Thanks for your time.
> Kindest Regards,
> -John

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