GENEALOGY-DNA-L Archives

Archiver > GENEALOGY-DNA > 2005-08 > 1122950901


From: "Jerry L. Ivey" <>
Subject: RE: [DNA] CDYa/b
Date: Mon, 1 Aug 2005 21:48:21 -0500


We have a parallel mutation in CDYa/b within the Ivey/Ivie/Ivys. We have
a second parallel mutation in 389-2 between two other family lines where
we know the specific ancestors of the participants.

-----Original Message-----
From: Phil Goff [mailto:]
Sent: Monday, August 01, 2005 8:30 PM
To:
Subject: Re: [DNA] CDYa/b

Thanks Bob. Yes, I know of these pitfalls. As such, I not interested in
asking sponsors to pay for a 37-marker test just to get CDYa/b, which
may not be useful for grouping anyhow. If I could test just CDYa/b, plus
a few other basic markers for alignment purposes, I'd go down that path.
At the moment, I much suspect there are parallel mutations or multiple
mutations, which are confusing the results. Thanks,

Phil

----- Original Message -----
From: "Robert Stafford" <>
To: <>
Sent: Monday, August 01, 2005 8:06 PM
Subject: Re: [DNA] CDYa/b


> Phil,
>
> You should review our previous posts on parallel mutations. CDYa and b
are
> extremely fast markers. Thus, they will have many more parallel
mutations
> than other markers. There are many cases where it appears that
mutations
> on it can be used for grouping, but in fact there is a second or third

> independent mutation. There are many projects which naively think they

> have a unique mutation, but fail to do the proper testing to verify
it.
>
> Bob Stafford


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