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From: Patricia <>
Subject: Re: [DNA] R-L21+ deeper clade testing
Date: Fri, 18 Jun 2010 09:46:10 -0600
References: <362002.73193.qm@web35704.mail.mud.yahoo.com>
In-Reply-To: <362002.73193.qm@web35704.mail.mud.yahoo.com>


What about the Family Finder test from Family Tree DNA?
Patricia

On 18-Jun-10, at 9:19 AM, Barbara Stabley wrote:

> My husband was an only child. He and his father are deceased.
> There is no one else to test. My son and I are agreeable to
> further testing, if anyone thinks it's advisable. That is why I
> questioned Clay's appeal. For the long term, what other tests would
> anyone suggest?
>
> Barb
>
> reply to:
> Message: 7
> Date: Fri, 18 Jun 2010 02:14:50 -0400
> From: "robert mclaren" <>
> Subject: Re: [DNA] R-L21+ deeper clade testing
> To:
> Message-ID: <>
> Content-Type: text/plain; charset=US-ASCII
>
> Barb,
>
> Clay has aleady responded to you about the deeper clade testing. I
> do have
> one suggestion for you about further STR testing. Did your husband
> have
> any brothers? If so, testing one of them, or a son of one of them,
> may
> give you a little bit more information. The odds are high that a 67-
> marker
> test for one of them will match your son 67/67; however, this one
> additional test will confirm that. In that case, you will know his
> paternal grandfather's DNA signature. If the additional test does
> show a
> differrence, then your would know his paternal grandfather's DNA
> signature
> for those markers that the two had in common. In this case, you
> wouild
> need another brother of your husband, or a son of that other
> brother, to
> test. You can then derive the paternal grandfather's DNA signature by
> comparing all three tests, marker by marker. Where all three are
> ideitical, that is the marker value for the grandfather. Where they
> are
> not identical, two will be. So the value for those two will be the
> marker
> value for the grandfather.
>
> The value of this strategy is that when you do get a match for your
> son,
> you will be able to make sure that the match extends to his
> grandfather.
> If it is a close match (not 67/67), then checking his grandfather's
> DNA
> signature (if different) can tell you if the match moves closer.
>
> Yours aye,
>
> Bob McLaren
>
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