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Archiver > TMG > 2004-03 > 1079040659


From: Eric Haas <>
Subject: Re[2]: [TMG] OT - Why Do Genealogy
Date: Thu, 11 Mar 2004 16:30:59 -0500
References: <144.23f9e8c8.2d81cba3@aol.com><003f01c40793$e1d50ec0$8333fea9@dimension>
In-Reply-To: <003f01c40793$e1d50ec0$8333fea9@dimension>


Thursday, March 11, 2004, 1:07:50 PM, JEH wrote:

J> Secondly you cannot be sure that your William Cash from the 1600s has
J> contributed any of your genetic makeup at all. Humans have 46 chromosomes
J> half of which are inherited from each parent. My 8G-grandfather Matthew
J> Dodsworth was born cir 1660. Since I have 1024 8g-grandfathers to contribute
J> the 46 chromosomes the chances are that none of them comes from Matthew. The
J> exception that I can argue for is my 8g-grandfather on the direct male line
J> since he must have contributed the X-chromosome that makes me a male.
J> However since I don't know who he is (and even if I did) I still cannot
J> exclude the "milkman" effect.


It's the Y-chromosome that makes you male. And, you could add your
mitochondrial DNA which comes from the direct female line.


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