RESUMO
Population genetic data for 21 X-chromosome markers (Alu insertions and STRs) are reported for two populations (rural and urban) in Salta province (north-western Argentina). New variants are described, confirming the complexity and variability of some markers in this set. Results reveal Salta populations harbor a high Native American component, despite their self-recognized European ancestry. Notwithstanding the high genetic similarity of both populations, the rural sample seems to have maintained a larger Amerindian legacy. Data further show these X-linked markers, especially STRs, are highly informative in Salta populations and, therefore, can contribute to the development of a local database for forensic purposes in north-western Argentina.
Assuntos
Cromossomos Humanos X/genética , Indígenas Sul-Americanos/genética , Polimorfismo Genético/genética , População Rural/estatística & dados numéricos , População Urbana/estatística & dados numéricos , Argentina , Frequência do Gene , Variação Genética , Genética Populacional/estatística & dados numéricos , HumanosRESUMO
Allele frequencies for 15 short tandem repeat (STR) loci were obtained from a sample of 110 individuals from the Calchaqui Valleys population (North-Western Argentina). The combined power of exclusion and combined power of discriminating for the 15 tested STR loci were 0.999964 and 0.9999999999999998, respectively. Matching probability was 1 in 4.58 × 10(15). Therefore, it may be concluded that the set of 15 STRs included in the AmpF STR Identifiler kit, represents a powerful tool for forensic applications, paternity testing and population genetics studies in the Calchaqui Valleys population.
Assuntos
Frequência do Gene , Genética Populacional , Repetições de Microssatélites , Argentina , Humanos , Reação em Cadeia da PolimeraseRESUMO
Frequency data of the short tandem repeat (STR) loci D3S1358, vWA, FGA, D8S1179, D21S11, D18S51, D5S818, D13S317, D7S820, HUMTH01, D4S243, D18S535, HUMF13A1 and D12S391 were determined in the Puna population (Andean region from north western Argentina). In this study, 5 out of the 14 loci did not meet Hardy-Weinberg expectations. The excess of homozygotes observed in most of the markers could be due to a Wahlund effect and/or inbreeding. The frequencies were significantly different from those of other compared populations from Europe and America. Forensic parameters indicated that the 14 loci studied in the Puna region are highly discriminating, but the lack of Hardy-Weinberg equilibrium in some of the markers must be taken into account in the application of these results to paternity and forensic casework.
