Abstract
We evaluated haplotype and allele frequencies, as well as statistical forensic parameters, for 23 Y-chromosome short tandem repeats (STRs) loci of the PowerPlex®Y23 system (DYS19, DYS385a/b, DYS389I/II, DYS390, DYS391, DYS392, DYS393, DYS437, DYS438, DYS439, DYS448, DYS456, DYS458, DYS635, Y-GATA-H4, DYS481, DYS533, DYS549, DYS570, DYS576, DYS643) in a sample of 150 apparently healthy males, resident in South Brazil. A total of 150 different haplotypes were identified. The highest gene diversity (GD) was observed for the single locus marker DYS570 (GD = 0.7888) and for a two-locus system DYS385 (GD = 0.9009). We also examined 150 father-son pairs by the same system, and a total of 13 mutations were identified in the 3450 father-son allelic transfers, with an overall mutation rate across the 23 loci of 3.768 × 10−3 (95 % CI: 3.542 × 10−3 to 3.944 × 10−3). In all cases there was only one locus mutated with gain/loss of repeats in the son (5 one-repeat gains, and 7 one-repeat and 1 two-repeat losses); we observed no instances of mutations involving a non-integral number of repeats.
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Da Fré, N.N., Rodenbusch, R., Gastaldo, A.Z. et al. Genetic data and de novo mutation rates in father-son pairs of 23 Y-STR loci in Southern Brazil population. Int J Legal Med 129, 1221–1223 (2015). https://doi.org/10.1007/s00414-014-1101-2
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DOI: https://doi.org/10.1007/s00414-014-1101-2