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Archiver > GENEALOGY-DNA > 2005-07 > 1120245916


From: (John Chandler)
Subject: Re: [DNA] A Convergence Between Haplogroup A Towards the AMH
Date: Fri, 1 Jul 2005 15:25:16 -0400 (EDT)
References: <IGEOKAGLHNEKPCKPADIGGEONKBAA.bbailey.lowedna@baileyconnection.com>
In-Reply-To: <IGEOKAGLHNEKPCKPADIGGEONKBAA.bbailey.lowedna@baileyconnection.com>


Bill wrote:
> That is why all us here are pushing deep-level SNP testing to end the
> guessing with STRS. A genealogist, we want the facts, not guesses.

As genealogists, we want genealogy, not haplogroups. It is population
geneticists who want haplogroups. The present scheme of haplogroups,
in fact, cannot be extended to a level that would be useful for genealogy,
since we would need roughly a million subclades to extend into the
genealogical time frame. At that depth, the assumption that SNPs are
unique events fails catastrophically. Indeed, the present scheme already
pushes the limits of that assumption. For genealogical purposes, we
need a completely new scheme based on whole-chromosome sequencing for
many million individuals worldwide.

John Chandler

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