The Y-chromosomal haplotype and haplogroup distribution of modern Switzerland still reflects the alpine divide as a geographical barrier for human migration.

Martin Zieger & Silvia Utz
A sample of 606 Swiss individuals has been characterized for 27 Y-STR and 34 Y-SNPs, defining major European haplogroups. For the first time, a subsample from the southernmost part of Switzerland, the Italian speaking canton Ticino, has been included. The data reveals significant intra-national differences in the distribution of haplogroups R1b-U106, R1b-U152, I1 and J2a north and south of the alpine divide, with R1b-U152 being the most frequent haplogroup among all Swiss subpopulations, reaching 26...
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