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Archiver > GENEALOGY-DNA > 2004-10 > 1097180860


From: "robert mclaren" <>
Subject: RE: [DNA] Suggestions on Interpreting an Unusual DNA result?
Date: Thu, 7 Oct 2004 16:27:40 -0400


Ellen,

I don't think that the results rule out Adam and John being siblings.
Johann and John, showing the same unusual maker (464e) are very likely
related. However, if this marker is the only difference between John and
Adam, then isn't it possible for there to be a back mutation in Adam's
case? It would be interesting to see more Snyder results.

Bob McLaren


> [Original Message]
> From: ellen Levy <>
> To: <>
> Date: 10/7/2004 3:43:07 PM
> Subject: [DNA] Suggestions on Interpreting an Unusual DNA result?
>
> Hi List:
>
> I just received a new DNA result on my Snyder DNA
> Project and it is somewhat unusual. I could use some
> help on interpreting this one.
>
> One of our family's ancestors is John Snyder, born
> abt. 1797 in Pennsylvania. We tested this line
> against two other's we believed there was a possible
> genetic connection to: Johann Dewalt Schneider, born
> 1755 in Germany, died 1828 in PA, and Adam Snyder (abt
> 1793-1885).
>
> There was an exact 25 marker match between the Dewalt
> and Adam Snyder lines. However, Dewalt's results also
> came back with an unusual mutation - a extra marker at
> 464 (464e = 16). Adam's results did not reflect this
> extra marker.
>
> I received John Snyder's results today - there is a 24
> out of 25 marker match between these participants (and
> they are all haplogroup I) - clearly, they are all
> branches of the same Snyder lineage. However, John's
> line also has the extra marker at 464e.
>
> Genealogists previously believed that John and Adam
> Snyder might have been brothers. Given the fact that
> Adam's results don't have the extra marker, but
> Dewalt's and John's lines do, does this preclude a
> possible sibling relationship between John and Adam?
>
> Thanks for any help or suggestions.
>
> Ellen Coffman
>
>
>
>
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