This is a Message Board Post that is gatewayed to this mailing list. Author: FredricZS Surnames: Classification: queries Message Board URL: http://boards.rootsweb.com/surnames.amy/167.3/mb.ashx Message Board Post: I am answering here the e-mail you sent to me, as Rootsweb connection service returned it saying it couldn't be delivered, and your e-mail is hidden. My e-mail is available if you click on my name if you want to contact me directly. To answer your question: y-DNA is only in males, and is passed virtually unchanged from father to son. That is why the person tested would need to be a male surname AMY that is descended from Thomas to test. There is some information about DNA testing here: http://www.worldfamilies.net/dnatesting Rick Saunders Important Note: The author of this message may not be subscribed to this list. If you would like to reply to them, please click on the Message Board URL link above and respond on the board.