Geographical Associations of Chromosomes

My chromosomes can be shown to be in common with the pool of individuals of specific geographic regions who have been tested. In theory, my genetic makeup should be 75% Western European–mother (50%) and my father’s mother (25%). However, it is only 45% which means that my English mother and Scottish grandmother would have some explaining to do, were they still alive.

Since our narrow current quest is to explain my “orphan” grandfather, I have extracted all Western European from the admixtures calculated from each chromosome, and dubbed the residual to be 100%. The non-Western European contributions distribute themselves as follows, although the weighting in each chromosome varies significantly. I will add that table when I can get it to present clearly here.

Removing 100% of Western Europe
New Weighting

East_European 29.6%
West_European
Mediterranean 44%
Neo_African 0.2%
West_Asian 11.3%
South_Asian 2.3%
Northeast_Asian 1.0%
Southeast_Asian 0.7%
East_African 0.5%
Southwest_Asian 6.7%
Northwest_African 3.5%
Palaeo_African 0.4%
100%

Source: 23andMe Admixture Analysis

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