A forensic population database in El Salvador: 58 STRs and 94 SNPs

Abstract

We have genotyped the 58 STRs (27 autosomal, 24 Y-STRs and 7 X-STRs) and 94 autosomal SNPs in Illumina ForenSeq™ Primer Mix A in a sample of 248 men and 143 women from El Salvador, Central America. Regional division (Centro, Oriente, Occidente) showed in almost all cases F values not significantly different from 0, and further analyses were applied only to the undivided, country-wide population. The overall random match probability (RMP) decreased from 6.79 × 10 in length-based genotypes in the 27 autosomal STRs to 1.47 × 10 in repeat-sequence based genotypes. Combining the autosomal loci in this set, RMP reaches 2.97 × 10. In a population genetic analysis, El Salvador showed the lowest F values with US Hispanics both for autosomal and X-STRs; however, it was much closer to Native Americans for the latter than for the former, in accordance with the well-known gender-biased admixture that created most Latin American populations.