My main observations after reading this study are: - relative
genetic homogeneity in Europe, with a fairly small percentage of
variance explained by geographic differentiation - clinal,
rather than racial apportionment of European genetic variation,
with no emerging separated clusters (except the Finns, who stand
at some distance along the first eigenvector) - south-north (but
not east-west) decrease in genetic variation and heterozygosity
indicating that Europe was populated on a south-north axis,
rather than an east-west one. - clear clustering of individuals
from different ethnic groups within the European continuum,
indicating that ethnic groups are not only cultural, but to some
extent biological entities. - Some ethnic groups are clearly
distinguishable from each other (e.g. Swedes vs. Spaniards);
some groups are partitioned into fairly disjoint sets (Spain I
vs. Catalans in Spain II); others mutually overlap (e.g.,
British and Irish); while others overlap asymetrically (e.g.,
some former Yugoslavs in t