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Archiver > GENEALOGY-DNA > 2008-09 > 1220678761


From: "Robert Tarín" <>
Subject: Re: [DNA] 9RA Autosomal Native American Marker
Date: Sat, 6 Sep 2008 00:26:01 -0500
References: <ea3bd9560809051659n28a52b47od5bb6c87c96ede3f@mail.gmail.com><e2f96c1b0809052108r16fbe4f8v9e074fb34e564f39@mail.gmail.com><ea3bd9560809052129h261240bfxa1d4669fa9c5777b@mail.gmail.com>
In-Reply-To: <ea3bd9560809052129h261240bfxa1d4669fa9c5777b@mail.gmail.com>


David,

Given the nature of autosomal inheritance, how likely would a particular
value be passed to someone from a relatively recent ancestor versus from a
distant ancestor? Take for example a value of 9 for D9S919, I would think
there is a fair chance to receive it from a grandparent but almost none if
the ancestor were say 10 generations back. You might have had an ancestor
with a 9 but never see it today. Isn't this why results are "more is better"
in the autosomal world?

Regarding your 18 being from a European population instead.....you cannot
really know that for certain. Don't discount it yet for your Six Nations
ancestry. Looking at the Table 1 percentages it is more likely seen in NA or
Asian populations than Europeans. It's all in the confidence levels of the
most likely explanation.

Robert

On Fri, Sep 5, 2008 at 11:29 PM, David Faux <> wrote:

> Robert:
>
> I would think that of the many possibilities, that the evidence suggests a
> reasonable probability that the 18 value in your case comes from your
> Chihuahua State ancestors. One would only be able to say that with a high
> degree of confidence if all of the other groups could be ruled out or put
> into the very unlikely range. The most likely explanation of my 18 repeats
> is via one of the European populations, although not at all common there.
> I
> guess only the 9 repeats would provide the ultimate in confidence in a
> finding that pertains to Native Americans.
>
>
>
>

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