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From: "Diana Gale Matthiesen" <>
Subject: Re: [DNA] GENEALOGY-DNA Digest, Vol 4,Issue 1032 Subject: SNP Determination
Date: Wed, 11 Nov 2009 13:47:26 -0500
References: <26242.90039.qm@web53401.mail.re2.yahoo.com><4AFAEF74.4080001@sbcglobal.net>
In-Reply-To: <4AFAEF74.4080001@sbcglobal.net>


Most of the time, "derived" will mean being positive for a mutation, but the
real meaning of "derived" is being evolutionarily downstream, as opposed to
ancestral or evolutionarily upstream. In the case of a back-mutation, "derived"
can mean being negative for a mutation, so it's probably better to think in
terms of ancestral v. derived, rather than just negative v. positive.

Diana

> -----Original Message-----
> From: On Behalf Of Steve Trangsrud
> Sent: Wednesday, November 11, 2009 12:08 PM
> To: ;
> Subject: Re: [DNA] GENEALOGY-DNA Digest, Vol 4,Issue 1032
> Subject: SNP Determination
>
> 'Derived' means positive, so you are L62+ & L63+.
>


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