GENEALOGY-DNA-L ArchivesArchiver > GENEALOGY-DNA > 2008-09 > 1221563343
From: Vincent Vizachero <>
Subject: Re: [DNA] What shall R1b1c call themselves now?
Date: Tue, 16 Sep 2008 07:09:03 -0400
A haplogroup has only one age that matters, and that is the time to
its most recent common ancestor. It is descent from this MRCA that,
in fact, defines the haplogroup and not the mutation itself.
If everyone understood this, using a phrase like "age of haplogroup"
or some other plain-word description would be less problematic.
Alas, some folks continue to speak as if haplogroups have some other
meaningful age besides TMRCA ("when did the SNP first arise" is a
We estimate, not calculate, the TMRCA for a haplogroup by depending
on sampling. But since membership in a haplogroup is determined by
descent, not mutation, it is TMRCA that matters.
On Sep 16, 2008, at 5:20 AM, Bob Bootle wrote:
> It seems to me that the plain meaning of words is being ignored.
> As I see it
> The phrase " age of Haplogroup " is
> not slang and cannot be retired from usage.
|Re: [DNA] What shall R1b1c call themselves now? by Vincent Vizachero <>|