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Archiver > GENEALOGY-DNA > 2007-06 > 1183256122


From: "brian quinn" <>
Subject: Re: [DNA] Human X chromosome: 5 main haplotypes
Date: Sun, 1 Jul 2007 12:15:22 +1000
In-Reply-To: <mailman.20527.1183219988.3678.genealogy-dna@rootsweb.com>


Dora and Joe,

Yeah I think that is the crit bit, that they found a tiny bit or two that
doesn't recombine- so lasts for ages. Well tens of thousands of years.

I wonder if that uncombining section of my x chromosome is from my ma or da
though. 50:50 chance?

And if you are a woman then some of your unrecombined X is from your
father's mother and not only your mother's mother.

So unlike the Mtdna there is a way for a women to trace some bits of her
male ancestry.


Hmm I think.....

Brian
Message: 8
Date: Sat, 30 Jun 2007 10:00:53 -0500
From: "Dora Smith" <>
Subject: Re: [DNA] Human X chromosome: 5 main haplotypes
To: <>
Message-ID: <004201c7bb27$744f2110$>
Content-Type: text/plain; format=flowed; charset=iso-8859-1;
reply-type=original

That would make a big difference. Could be interesting then.

Yours,
Dora Smith
Austin, TX

----- Original Message -----
From: "Joe Knapp" <>
To: <>
Sent: Friday, June 29, 2007 7:27 AM
Subject: Re: [DNA] Human X chromosome: 5 main haplotypes


> On 6/29/07, Dora Smith <> wrote:
>> Don't think it would work - in women the x chromosomes can recombine.
>
> Aren't they concluding in this study that the particular segment they
> looked at doesn't recombine? The sample only included males, but the
> fact that the markers studied were found to be in "linkage
> disequilibrium" indicated that the segment does not recombine (males
> get the copy from their mothers, so it's virtually a sample of the
> mother's X).
>
> Joe
>
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