Resumo

JURADO MEDINA, Laura S et al. Gran Chaco paternal lineages, a DNA approach. Folia [online]. 2014, n.22, pp.187-202. ISSN 0325-8238.

The non-recombinant Y chromosome region has been successfully used to recognize the genetic structure of human populations’ paternal lineages. This paper is part of the multidisciplinary project “De las historias étnicas a la prehistoria en el Gran Chaco”, and it involves the study of individuals from diverse ethnic affiliation. It is aimed at recognizing the native fraction structuring of paternal lineages accounting the population dynamics and distribution patterns, which provide clarifying elements of the complex configuration of the Chaco populations. 82 lineages were identified among the 118 individuals analyzed, 22% of them were present in more than one individual within a population or between populations, sometimes geographically distant. The coefficient of differentiation among populations found (21%) is the highest in native lineages of Argentine populations (3%). Haplotype network lineages show a substructuring of three main branches, composed by lineages from different groups, reflecting the absence of insulation between them and raising interesting questions in light of archaeological and ethnolinguistic data.

Palavras-chave : Molecular Biology; Parental Lineages; Gran Chaco.

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