Diversity of maternal and paternal lineages in thegeographic extremes of the Azores (Santa Mariaand Flores Islands): Insights from mtDNA,Y-chromosome and surname data

摘要

The mitochondrial DNA (mtDNA) and Y-chromosome (NRY) haplogioup composition, as well as the surname distribution in Santa Maria and Flores Islands (Azotes Archipelago, Portugal), were analysed. Both mtDNA and NRY haplogioup distribution display significant differences between the two islands. For mtDNA, gene diversity was higher for Flores. NRY diversity derived from haplogroups, as well as the heteronymy values were statistically lower for Santa Maria Ru values indicated reduced levels of microdifferentiation within both islands Integration of previous results with those obtained in the present study further reinforced the fact that the different Azorean islands cannot be considered as a whole homogeneous population .