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Archiver > GENEALOGY-DNA > 2007-07 > 1185733424


From: "Dora Smith" <>
Subject: Re: [DNA] Is H2a2 the same thing as H2b?
Date: Sun, 29 Jul 2007 13:23:44 -0500
References: <d3f.f5f51c5.33de33cb@aol.com>


Not again. Alright. I'll take your word for it.

But from your phylogenetic diagram it still has this person going down two
branches at once, whether you're moving toward H2 or toward the CRS.

Yours,
Dora Smith
Austin, TX

----- Original Message -----
From: <>
To: <>
Sent: Sunday, July 29, 2007 1:17 PM
Subject: Re: [DNA] Is H2a2 the same thing as H2b?


> In a message dated 7/29/2007 10:56:39 AM Pacific Daylight Time,
> writes:
>
>> Hold it - how is it possible to match the CRS at 1438 but have downstream
>> mutations, unless there was a back mutation, or a mistake?
>
> You need to keep track of whether a chart is showing an actual mutation
> from
> the ancestral value, versus a difference from the CRS. We sometimes get a
> little casual and call everything that's listed in a haplotype a mutation,
> but the
> two things are not always identical.
>
> Phylogenetic trees traditionally show actual mutations. So on this chart,
> H2b
> (Roostalu's version with a mutation at 8598) does NOT match the CRS at
> positions 4769, 750, 8860, and 15326. But it does match at 1438, so it
> shared part
> of the journey from H -- just as far as H2. After that the paths diverged.
>
> http://www.dnaheritage.com/files/rootswebupload/H2b_or_H2a2_CRS.GIF
>
> You get the same effect further up the tree, too. True mutations at 2706
> and
> 7028 define haplogroup H, but if you are IN haplogroup H, you won't see
> those
> numbers in your list of differences. If you are not in H, you have the
> ancestral values, and you will see 2706G and 7028T in your list of
> differences.
>
> Ann Turner
>
>
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