Figure 1.

Geographic distribution of the β52Cys allele at HBB-T1 (A) and HBB-T2 (B) shown as interpolated allele frequency surfaces. Dots represent the location of population samples. Data for Britain were taken from [25]. (C) mtDNA lineages distribution modified from [36]. Western lineage in yellow, Carpathian lineage in green, Eastern lineage in red, Balkan lineage in dark blue, Italian lineage in light blue, Calabrian in violet, Pyrenees lineage in brown and introgressed mtDNA from Clethrionomys rutilus in grey colour.