Phylogenetic tree of 47 Y-chromosome haplogroups seen in this study (shown in boldface) and hierarchically defined using 81 slowly evolving binary markers (68 in the Figure). The marker names are shown along the branches, and haplogroup names are shown on the right side according to ISOGG Y-DNA Haplogroup Tree 2011. Potentially paraphyletic undefined subgroups are distinguished from recognized haplogroups by the asterisk symbol. Haplogroups tested for but not seen in this study are shown in (italic). See Additional file 1: Table S2 for a more detailed frequency table.