The distribution of Y-chromosomal haplotypes and haplogroups in two population samples from the Romagna region (North Italy): differences between urban (Rimini) and rural area (Valmarecchia).

We have studied the distribution of Y chromosomal haplotypes and haplogroups in two population samples from the Romagna region (North Italy) by analyzing male-specific markers that reflect past and recent history: SNPs and STRs. The population samples were collected in the urban area of Rimini, an ancient port in Roman age and in the near rural area of Valmarecchia, that is more isolated and geographically out of ancient trading ways. We analyzed 11 Y STRs by a commercial kit and 20 binary polymorphisms by minisequencing analysis. In spite of the different historical records and geographic locations, the two population samples showed high genetic affinities likely due to modern demographic migrations that might have eroded the past genetic substructure