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Archiver > DNA-R1B1C7 > 2009-04 > 1239798904
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Subject: [R-M222] TMRCA Estimate--Byrne NW Cluster
Date: Wed, 15 Apr 2009 12:35:04 +0000 (UTC)
In-Reply-To: <1533253010.2186611239798627241.JavaMail.root@sz0128a.westchester.pa.mail.comcast.net>
An interesting exercise. I ran 27 M222 37-marker haplotypes from my Byrne/Burns/Beirne project, and it appears that we are much younger that the overall M222 group's average.
Abbreviated, my results were:
KN's method and J Chandler's mutation rates 25.4 gens 762 years
Minus CDY and 464 31.6 949
Minus 464 only 26.1 784
Minus CDY 29.4 881
Minus 385, 459, 464, YCA II, CDY 29.2 881
Heald's method and Chandler's mutation rates 30.4 913
Minus CDY and 464 32.4 973
Minus 385, 459, 464, YCA II, CDY 24.1 722
It would appear that the Byrne M222 group may have emerged between 1036 AD and 1387 AD, possibly about the time surnames became common. I realize that "may" and "possibly" are the key words though.
Paul
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