Traces of medieval migrations in a socially stratified population from Northern Italy. Evidence from uniparental markers and deep-rooted pedigrees

摘要: Social and cultural factors had a critical role in determining the genetic structure of Europe. Therefore, socially stratified populations may help to focus on specific episodes European demographic history. In this study, we use uniparental markers analyse Partecipanza San Giovanni Persiceto (Northern Italy), peculiar institution whose origins date back Middle Ages members form patrilineal descent group founder families. From maternal point view (mtDNA), is genetically homogeneous with rest population. However, observed significant differentiation for Y-chromosomes. addition, by comparing 17 Y-STR profiles deep-rooted paternal pedigrees, estimated mutation rate equal 3.90 * 10−3 mutations per STR generation an average duration time 33.38 years. When used these values tentative dating, 1300-600 years ago Partecipanza. These results, together Y-chromosomal composition historical evidence, suggest that Germanic (Lombards particular) settled area during Migration Period (400–800 AD, approximately) have important foundation community.