GENEALOGY-DNA-L ArchivesArchiver > GENEALOGY-DNA > 2001-02 > 0982770283
Subject: Re: [DNA] Ancestor identification
Date: Wed, 21 Feb 2001 10:44:43 EST
In a message dated 2/21/2001 6:44:43 AM Pacific Standard Time,
> Thanks. Here's a little more grist for the genetic mill. How do you track
> your mother's paternal grandmother. Does her mtDNA get passed through her
> son to my mother?
Both male and female children have their mother's mtDNA, but only the female
children will pass it on to their children. Mitochondria are little
structures responsible for many reactions in metabolism, and they are found
in the body of the cell, not in the nucleus of the cell where most of our DNA
resides. Mitochondria have their own DNA. The egg has hundreds of
mitochondria and the sperm has just a few, mostly found in the tail, so the
fertilized egg has no paternal mtDNA for all practical purposes.
There is a message in the archives about how to find representatives of your
eight great-grandparents for Y-line and mtDNA testing. If the URL is broken
up by the time you read this message, copy and paste it into your browser.
The first one ends with the numbers 87 and the second one with the numbers 53.