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Median-joining networks of Y STR haplotypes within four haplogroups. A, Haplogroup VI-68 (N=113; h=0.47; k=0.56). B, Haplogroup VI-56 (N=32; h=0.87; k=0.64). C, Haplogroup VI-52 (N=57; h=0.76; k=3.15). D, Haplogroup IX-104 (N=17; h=0.94; k=2.50). The sizes of the nodes are proportional to the relative frequency of that haplotype within the haplogroup. Branch lengths within each network are proportional to the number of mutations separating haplotypes.
