en.wikipedia.org/wiki/Haplogroup_R1a1_(Y-DNA)
"The first carriers of the R1a haplotype are believed to have been peoples living about 15,000 years ago[3] confined by an area within the Ukrainian LGM refuge. The gene spread by a nomadic lifestyle and proliferated on
Eurasian steppes. Current theories point to the gene being tied to speakers of the
Proto-Indo-European language in the Kurgan scenario, spreading the gene further to Asia and most of Europe. The low occurrence of R1a1 in Western European Indo-European speaking populations, most notably the region west of the Vistula[4] — including the enigmatic Nordwestblock — shows that this correlation with PIE cannot be extended to the "kurganized" western Corded ware and subsequent Beaker culture.[5][6] This corresponds to the now widely accepted view that kurganisation never occurred.[7]
Highest haplotype incidence suggests that haplogroup R1a1 originated among the ancestors of the Balto-Slavic speakers of Eastern and Central Europe."
[Modificato da Quintilio Varo II 31/10/2007 14:35]