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From: Nelda Percival <>
Subject: Re: [DNA-NEWBIE] DNA-NEWBIE Inherited "Stuff"...!
Date: Sun, 21 Sep 2008 15:17:20 -0500


HI Bob,
Although, about Y-DNA you are correct it is the Sex chromosome, MTDNA IS NOT! The Y and X sex chromosomes are found inside the nuculas of the cell. MTDNA is found outside the nuculas. One of the only reason it is used to identify the female line is because it is passed through the egg at conception, it kills off the possibly remaining mtdna that might have been left in the sperm..
It also is a DNA string although, it is a circular string instead of being straight.

A male child inherits his mtdna from his mother's egg. mtdna is considered the power generator of the cell. Depending on the job of the cell, will depend on how much mtdna is within the cell. So a muscle cell will have more mtdna then a skin cell. When impregnated, the egg's mtdna looks at the remaining mtdna of the sperm as a threat and kills it. The job of mtdna of the sperm is to get it to travel to the egg to impregnate it.

I'd give you a URL for a nice set of pictures and write up.. but it seems to be off line even thought I thought I had it fixed... I'm going to go fix it now...

try: http://www.rootsweb.ancestry.com/lcdna/facts/faq4.htm
nelda

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