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From: "O'Donnell - FTDNA Surname Proj" <>
Subject: multistep deletions on markers
Date: Fri, 30 Jun 2006 11:35:37 -0700 (PDT)


Why do multistep deletions on markers occur? Are there any theories/ideas on that? Are they caused by environmental factors, such as solar flares, cosmic rays, famine, etc?

I'm still puzzling over Y-DNA test results that show a multistep deletion on DYS 391, which is usually 10 or 11. I have a value of 7 on that marker. Thanks,

Gail


O'Donnell Surname Project at Family Tree DNA:
http://www.familytreedna.com/public/ODonnell/

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