Abstract
A new polymorphic INDEL was detected at the X-STR GATA172D05 flanking region, which corresponds to an 18-bp deletion, 141 bp upstream the TAGA repeat motif. This INDEL was found to be polymorphic in different population samples from Native Americans, Africans, and Europeans as well as in an admixed population from the Amazonia (Belém). Gene diversities varied between 37.5% in Native Americans and 49.9% in Africans. Comparison between human and chimpanzee sequences showed that the ancestral state corresponds to the presence of two copies of 18 bp, detected in both species; and the mutated allele has lost one of these two copies. The simultaneous analysis of the short tandem repeat (STR) and INDEL variation showed an association between the INDEL ancestral allele with the shorter STR alleles. High diversities were found in all population groups when combining the information provided by the INDEL and STR variation. Gene diversities varied between 76.7% in Native Americans and 80.6% in both Portugal and Belém.
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Acknowledgements
This work was partially supported by Fundação para a Ciência e a Tecnologia (grant SFRH/BD/21647/2005 and POCI 2010, VI Programa-Quadro 2002–2006), Financiadora de Estudos e Projetos (FINEP), Milénio/CNPq (Conselho Nacional de Desenvolvimento Cientifico e Tecnológico), and UFPA.
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Rodrigues, E.M.R., dos Santos, N.P.C., dos Santos, Â.K.C.R. et al. An INDEL polymorphism at the X-STR GATA172D05 flanking region. Int J Legal Med 123, 89–94 (2009). https://doi.org/10.1007/s00414-008-0300-0
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DOI: https://doi.org/10.1007/s00414-008-0300-0