Archiver > GENEALOGY-DNA > 2005-06 > 1119041099

From: "" <>
Subject: Re: [DNA] I am M269+ (R1b1c)
Date: Fri, 17 Jun 2005 16:44:59 -0400

First, it helps to have a framework in mind. Check out this graphic:

This is pretty blurry at the detail level, but every hoirzontal line in the
tree is associated with a named SNP for which any tested individual will be
either positive or negative.

In the R branch, M343 identifies R1b. P25, which is immediately downstream,
identifies R1b1. And M269, which is just downstream of P25, identifies

To be precise, only M343 identifies R1b. But as I noted in my original
post, we also tend to use "R1b" as a shorthand designation for both P25 and
M269 simply because there is nearly perfect overlap between the three SNPs
in the real world.

David Wilson

Original Message:
From: Robert Davenport
Date: Fri, 17 Jun 2005 13:27:19 -0700
Subject: Re: [DNA] I am M269+ (R1b1c)


And what about M343? Is that the same as P25+ ?

And are they both the same as Rlb?

I'm learning this stuff, but it's slow work.

At 01:21 PM 6/17/2005, gareth.henson wrote:
>P25 is a marker, P25+ is a result for a particular individual tested for
>this marker.
>----- Original Message -----
>From: "Robert Davenport" <>
>To: <>
>Sent: Friday, June 17, 2005 9:16 PM
>Subject: Re: [DNA] I am M269+ (R1b1c)
> >
> >
> > What is the difference between P25 and P25+
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