Analysis of ethnic origin asymmetries in uniparental lineages in Argentinian population

With the aim to study Argentinian ethnic structure and its miscegenation, we analyzed the mitochondrial DNA (mtDNA) and Y-chromosome Short Tandem Repeats (Y-STR) of 1580 blood samples from male donors. Our results showed that the population has a greater presence of Native American lineages on the maternal side (68.73 %) regarding the paternal line (4.18 %), alongside a majority of Eurasian origins in the paternal line (92.47 %). From the independence analysis, a significant difference was observed when compared with that expected by random crossings. The results are in agreement with a model where the miscegenation of native women with European men prevails, which has been widely observed in Argentine’s migratory currents and population history.