GENEALOGY-DNA-L Archives

Archiver > GENEALOGY-DNA > 2010-11 > 1290875495


From: "Scott D Kendall" <>
Subject: Re: [DNA] CDY .... any upgrades?
Date: Sat, 27 Nov 2010 10:31:35 -0600
References: <5EF91C874983428BB6204F3523B3E948@ScottLaptop><AANLkTim_npttYB4Jv+HtP5rotmV66wNX9+t1T2f-oesc@mail.gmail.com>
In-Reply-To: <AANLkTim_npttYB4Jv+HtP5rotmV66wNX9+t1T2f-oesc@mail.gmail.com>


Bob,

Thank you for responding.

Yes, CDY is moving a lot within one group of the Cornwell study. I trying
to determine if it was specific to one lineage, but it can't be isolated.

One of the members in the group wanted to know if there were any tests to
help isolate CDY.

Scott

-----Original Message-----
From:
[mailto:] On Behalf Of Robert Stafford
Sent: Wednesday, November 24, 2010 11:34 PM
To:
Subject: Re: [DNA] CDY .... any upgrades?

What issues do you have? CDY is an extremely fast marker. The two copies are
about equal to the first 25 markers. Thus, they are likely to be involved in
parallel mutations or even back mutations. Thus, they would not override a
good paper trail.

If you have a multi-step mutation where the markers double, it is likely a
recLOH. Simply count it as 1. However, there are tests to consider in that
case.

Bob Stafford

On Wed, Nov 24, 2010 at 10:01 PM, Scott D Kendall
<>wrote:

> Hello,
>
>
>
> Are there any additional tests that could help identifying or resolving
> issues with CDYa & CDYb?
>
>
>
> Thanks
>
> Scott
>
>
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