of the gene pool of these studied Roma is similar to that of the surrounding European populations. Specifically, common Y-chromosome (i.e. male-line) haplogroups are haplogroups H (50%), I (22%) and J2 (14%), and R1b (7%). Common mitochondrial (i.e. female-line) haplogroups are H (35%), M (26%), U3 (10%), X (7%), other (20%).