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This study comprises genetic characterization of 15 autosomal and 17 Y-chromosomal STR loci in 103 unrelated male inhabitants of the Sindhi population to establish its lineage and parameters of forensic interest. The examined autosomal STRs revealed high combined power of discrimination, combined power of exclusion, and the combined matching probability as 0.99999999999999999042580, 0.9999977141, and 9.5742 × 10, respectively. A total of 89 unique haplotypes were obtained, of which 84 were observed once with a haplotype diversity value of 0.999677. The resulted Y-STR haplotypes exhibited a high degree of geographical demarcation by comparing with other populations at the local and global levels.

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Genetic diversity of 15 autosomal short tandem repeat (STR) loci was evaluated in 713 unrelated individual samples of a Punjabi population of Pakistan. These loci were scrutinized to establish allelic frequencies and statistical parameters of forensic and paternity interests. A total of 165 alleles were observed with the corresponding allele frequencies ranging from 0.001 to 0.446. D2S1338 was found as the most informative locus while TPOX (0.611) was the least discriminating locus. The combined power of discrimination (CPD), the combined probability of exclusion (CPE), and cumulative probability of matching (CPM) were found equaled to 0.999999999999999998606227424808, 0.999995777557989, and 1.37543 × 10-18, respectively. All the loci followed the Hardy-Weinberg equilibrium after the Bonferroni correction (p < 0.0033) except one locus D3S1358. The study revealed that these STR loci are highly polymorphic, suitable for forensic and parentage analyses. In comparison to different populations (Asians and non-Asians), significant differences were recorded for these loci.