Y-CHROMOSOMAL STR HAPLOTYPES DIVERSITY IN A SAMPLE FROM METROPOLITAN AREA OF BUENOS AIRES (ARGENTINA)

PAROLIN M LAURA ; AVENA SERGIO; DEJEAN CRISTINA; JAUREGUIBERRY STELLA; SAMBUCO LORENA; CARNESE FRANCISCO RAÚL

Revista del Museo de Antropología

Facultad de Filosofía y Humanidades UNC

Lugar: Córdoba; Año: 2012

1852-4826

The aim of this work was to analyze the origin of the Y-chromosome haplotypes in a sample fromBuenos Aires Metropolitan Area (BAMA), and to compare these results with data obtained atmitochondrial level. In order to reach this objective, 17 Y-STRs were determined from 85 unrelatedblood donors. A total of 85 unique haplotypes were observed. The haplotype diversity was 1.000+/-0.0018, and the average genetic diversity 0.680+/-0.095. The paternal lineages present a genetichomogeneity of European roots (93%), coming mainly from Italy and Spain. Amerindian paternalcontribution associated to sub-haplogroup Q1a3a was relatively low (6%). The low proportion ofAmerindian haplotypes and the high number of maternal lineages (44%) from the same samplereveals that there has been a differential input by gender in the history of this population. A singleprofile was E1b1a, which is predominant in sub-Saharan Africa. These data, together with thehistorical and demographic information, allows us to state that the small Amerindian and sub-Saharan contribution observed in the sample from BAMA, would be the result of recent migrations,initiated in the middle of twentieth century, mainly from the north of Argentina and borderingcountries of high native composition and, to a less extent, African origin.