GENEALOGY-DNA-L ArchivesArchiver > GENEALOGY-DNA > 2009-07 > 1248521638
From: Alan R <>
Subject: Re: [DNA] L21 origins (4 years after debut of S21/28..what dowenowknow)
Date: Sat, 25 Jul 2009 11:33:58 +0000 (GMT)
I kind of agree that the previous post was a little overly pessimistic. For example, I think there are some things we do know about L21. We know its common in the isles. Despite a modest sample we know its got a strong representation along the Rhine axis from its mouth to the Alps. Despite the usual very poor sample, it is proving to be quite common in France, especially the north-west (not just Brittany) and east so far. If it wasn't common in those areas of France there is no way we would have found so many already from such a small sample. There is a good scatter in Norway (which many are putting down to slavery but who knows). There is a good enough sample to indicate a pattern that its relatively poorly represented compared to S116* and local subclades in Iberia while Vince V seems fairly convinced its absence in Italy is real.
So, although far from a scientific sample, it is interesting that a macro/very broad brush pattern has apparently emerged which is very obvious if you look at the FTDNA L21 project map at an all-Europe scale (see link below). I think enough people have done L21 and other deep clade testing to give a generalised impression that L21 is a NW European clade mainly found north of the Alps and Pyrenees and west of the Elbe. The weakest part of our knowledge is the eastern boundary. Clearly there is a serious lack of testing in eastern Europe (east of the old 'Iron curtain'). I suspect L21 may extend a bit eastwards much like S28 but a lot more testing is needed in that area. Even is western Europe, the detail is very sketchy.
So, like S21, L21 has it value as a macro genealogical marker for those with no clear idea of ancestral origin in that it strongly weights likely origin to north-west Europe and makes an origin in the southern parts of Europe a lot less likely statistically. Of course its probabilities not absolutes.
|Re: [DNA] L21 origins (4 years after debut of S21/28..what dowenowknow) by Alan R <>|