Thursday, February 16, 2012

Dienekes' K7b calculator : my results

I'll just stick to Dienekes' K7b analysis. I have recently contacted a girl from my home Béarn who happens to have been tested on 23andme : she originates from villages close to modern Basque lands, in the valley of the Saison river in Western Béarn whereas my ancestry mostly lies in Vic-Bilh and Montanérès, an area in closer contact with both Central Gascony (thus the Garonne valley) and the Iberian peninsula (Aragon for instance).

In red : her ancestry
In green : my ancestry's centre of gravity

In order to respect her privacy, I won't divulgate her alias in Dienekes' analysis but she might very well comment on this blog as she's an active reader.

Me / Her

South Asian 0.7 / 0
West Asian 2.9 / 0.9
Siberian 0 / 0
African 0 / 0
Southern 26 / 28.1
Atlantic/Baltic 70.5 / 71
East Asian 0 / 0

She's clearly less influenced by "Asian" admixture (read : Neolithic) than I am (0.9% against my global 3.6% !) which is pretty consistent with the fact that she originates from a "remote" area which borders modern Basque lands (and which was still Basque-speaking in 1385 as far as medieval charts are concerned).

On the following chart, I'm #1 and she's #13. In comparison with mainstream French people tested by Dienekes, we're noted for a less than average West Asian affinity. Amongst French Basque people, West Asian affinity is virtually absent. It is pretty fair to guess that West Asian "admixture" in Gascony declines as one gets nearer to Basque lands.

It is pretty obvious that 2 individuals are not enough to have a clear vision of genetic diversity in ancient Vasconian lands : I might very well be "high" or "low" on West Asian admixture for my micro-region, I cannot truly say. We'd need more samples and then studies centred on SW France. In other studies, my Basque lineage was evident though I also had strong affinities with Aragon and Catalonia : something is going on in the Central Pyrenees, either because this area was more opened to subsequent migrations through the Ebro and the Garonne highways, or because ancient Vasconian lands has developed interval variation in ancient times.