AI Article Synopsis
- - African populations, especially from West Africa, are underexplored despite their high genetic diversity, prompting this study of 516 samples from Freetown, Sierra Leone.
- - The research analyzed 30 InDel markers, finding no significant linkage disequilibrium and providing various statistical measures (RMP, CPE duos, CPE trios) relevant for forensic applications, but also noted concerns regarding null and off-ladder alleles.
- - The Freetown population was found to have a closer genetic relationship to other West Africans and Bantu-speaking groups compared to other African populations, indicating specific genetic connections in this region.
Article Abstract
As the origin of modern humanity, African populations show high genetic diversity and are attracting increasing academic attention. However, populations living in West Africa have so far received less study and exploration. In this study, we analyze 30 insertion/deletion (InDel) loci of 516 samples from Freetown, Sierra Leone, to evaluate the forensic properties and reveal the genetic structure in Freetown, Sierra Leone, West Africa. No significant linkage disequilibrium (LD) between 30 InDels was observed after the Bonferroni correction. The random match probability (RMP), the combined power of exclusion for duos (CPE duos), and the combined power of exclusion for trios (CPE trios) were 6.823 × 10, 0.9168, and 0.9731, respectively. Null alleles and off-ladder alleles were observed, suggesting that we should be cautious when using this kit for forensic caseworks in African populations. In the population comparison study, we found that the Freetown population is genetically closer to geographically distinct West Africans and has a closer genetic relationship with the Bantu-speaking populations than other African populations.
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| http://dx.doi.org/10.1007/s00414-020-02417-7 | DOI Listing |
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