GENEALOGY-DNA-L ArchivesArchiver > GENEALOGY-DNA > 2010-11 > 1290663257
From: Robert Stafford <>
Subject: Re: [DNA] CDY .... any upgrades?
Date: Wed, 24 Nov 2010 23:34:17 -0600
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
On Wed, Nov 24, 2010 at 10:01 PM, Scott D Kendall
> Are there any additional tests that could help identifying or resolving
> issues with CDYa & CDYb?
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