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From: "Ken Nordtvedt" <>
Subject: Re: [DNA] revised TMRCA calculations for the R-L21 results
Date: Sun, 31 May 2009 09:08:06 -0600
References: <5cf61dfb0905271916i4cfa488ev898809742fec5011@mail.gmail.com><A540FBA8E36A45D98C3542B9925C966C@DadPC><D8ABB0BCF28148F4B30DB7924010A469@RichardNW><8436110BE83A4381A3D911976CEE388B@DadPC><00e701c9e09c$e56c74a0$6400a8c0@Ken1><F2FF9463B36B4806B096A777CFBF9AC7@DadPC><2433EAC81B0D45DD84DF19817C8C7129@RichardNW><4951E546E48140E593AFDC50CFBDD27D@DadPC><8187F898BD744F5199D9489FA1FB6C36@RichardNW><ECDB539D49FE42CEA3A60E218CC14BD4@DadPC><05713DAEDC51446B94799B2A4E3B2ED2@RichardNW><D849B6F99CFF46B994536D46023BEC04@elizabethod><7F342C08AA344137A23FDC0E0FF7DE0E@RichardNW>


Strictly speaking the age estimate was for a node representing the MRCA of
R1a and R1b. You might call that the last hurrah of R1. Has any R1* been
seen?

Why should the evolution of ht35 show the way to the ht15 of Western and
Central Europe? If ht35 and ht15 ancestral lines branched apart at some
point in the past, they could and perhaps did go their separate ways since.
I think we want to follow the movements of the more immediate ancestors of
P312/S21. Ken




----- Original Message -----
From: "Richard Stevens" <>
To: <>
Sent: Sunday, May 31, 2009 8:52 AM
Subject: Re: [DNA] revised TMRCA calculations for the R-L21 results


> Aren't there always reservations? Are any such estimates "written in
> stone"?
>
> Remember, though, that estimate was for R1, not even R1b, let alone
> R1b1b2.
> If it is at all accurate, then R1 itself only appeared during the LGM.
>
>>From what I have seen of Vince's HT 35 Project, the SNP trail runs roughly
> from southeast to northwest. We still don't know precisely where the
> R1b1b2a1 subclades first developed, let alone the R1b1b2a1b subclades,
> like
> L21.
>
> Rich



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