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Archiver > DNA-R1B1C7 > 2008-02 > 1202513334
From:
Subject: Re: [DNA-R1B1C7] Southern Ui Neill DNA
Date: Fri, 8 Feb 2008 18:28:54 EST
In a message dated 2/8/2008 3:52:17 P.M. Central Standard Time,
writes:
John,
It would be interesting to see a complete survey of Britain for the presence
of R1b1c7, as right now it only seems to appear in places known to have had
Irish colonization..
That would be interesting but also difficult, mainly because of the sparse
markers used by most of the studies. You could attempt to use the Capelli
study - I think David Wilson already did this - and the Sykes data, which he
organized into a spreadsheet. But I think he was leery of assigning R1b1c7 to
DNA samples on the basis of such limited markers, which amount to little more
than DYS 390 = 25 and DYS 392 = 14.
The Capelli study used these markers:
393 390 19 391 388 392
The Sykes data used these markers:
19 390 391 392 393 389i 389ii 388 425 426
So all you have in either data set is DYS 390 and DYS 392.
I can give what David Wilson presented in his version of the Sykes data.
He used four motifs, all based on DYS 392 = 14.
26/14
25/14
24/14
23/14
And came up with the following totals:
Region Count
Argyll 53
Borders 64
Central England 193
East Anglia 125
Grampian 118
Hebrides 73
Highland 79
Ireland 22
Isle of Man 29
London 151
North England 365
Northern Isles 202
Northumbria 83
South England 163
Southwest England 238
Strathclyde 120
Tayside & Fife 57
Wales 292
The three areas where the DNA is most numerous are North England, Wales,
Southwest England and the northern Isles. That's assuming all
these samples are R1b1c7 which many are probably not. I wonder how
prevalent the occurrence of DYS 390 = 25 and DYS 392 = 14 are in the general R1b
population outside of R1b1c7? I know it occurs. Just not sure how often.
John
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