GENEALOGY-DNA-L Archives

From:
Subject: Re: [DNA] mtDNA Concordance
Date: Thu, 13 Dec 2001 20:15:39 EST

In a message dated 12/13/01 2:47:29 PM Pacific Standard Time,
writes:


> > You're looking for an exact match for your one mutation -- you can
> > disregard
> > any listings with a different number of mutations. (???)
>
> Please explain what this (above) statement means and why one does or does
> not "help" us!
>

Connee had exactly one mutation compared to the Cambridge Reference Sequence
(CRS). It was at 16186[T]. The CRS is a "Helena" (haplogroup H), and many
sequences with just one mutation will be a Helena, too.

When she looked at the section in the Concordance where 16186[T] is colored
red, there were a number of listings where it appeared in combination with
other mutations. But she didn't find any listings where it appeared alone.
Therefore, there are no exact matches in the Concordance. This is not unusual
-- just about every time a researcher tests a new population sample, there
will be some previously unreported sequences. It does mean that if Connee
locates someone with her exact pattern, it will be more "interesting" than a
pattern which has been reported multiple times all over the world.

The page which includes 16186[T] is at
http://shelob.bioanth.cam.ac.uk/mtDNA/hvr1e.html if you want to see the
actual listings I'm talking about.

If you have two or more mutations, you need to look for listings which have
your mutations, no more and no less. You inherit your mtDNA all in one piece
from your mother, so you will have the same pattern she does, barring a rare
mutation. When you look at the Table of Contents page, click on the section
which has your first mutation.

http://shelob.bioanth.cam.ac.uk/mtDNA/toc.html is the Table of Contents page,
and there are also links to more detailed explanations.

If this isn't clear, maybe you could post your own mutations. It's always
easiest to look at a specific example.

Ann Turner
GENEALOGY-DNA List Administrator
http://lists.rootsweb.com/index/other/Miscellaneous/GENEALOGY-DNA.html

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