Abstract:
:Since Mexican mestizos are an admixed population, it is necessary to determine the effects that the substructure of the population has on genetic and forensic parameters. With this aim, a study was performed with 15 STR loci (CODIS plus D2S1338 and D19S433) on 1,640 unrelated Mexican mestizos. We determine allele and genotypic frequencies observing departure from Hardy-Weinberg expectation (12 out of 15 loci, with an excess of homozygotes, Fis > 0), as well as pairs of loci in an apparent linkage disequilibrium (13 of 92 loci). We conducted a test for genetic population stratification, the results show that the Mexican mestizo population is substructured into three subgroups, which are in HW and linkage equilibrium. The combination of the 15 loci in the whole population has high forensic efficiency with the capacity to genetically discriminate one individual in one quintillion (1/10(18)). Our data potentially validates the use of these 15 STR loci to establish forensic identity and parentage testing for legal purposes, and offers a powerful tool for genetic variation analysis. However, given that the population is stratified, we highly recommend applying a correction with the inbreeding coefficient in calculations of paternity and forensic studies to avoid erroneous assumptions.
journal_name
Mol Biol Repjournal_title
Molecular biology reportsauthors
Noris G,Santana C,Meraz-Ríos MA,de Lourdes Munoz M,Majluf-Cruz A,Magaña JJ,Granados J,Quezada R,Revilla MC,Martínez-Salas S,Xihuitl S,Martínez de la Escalera G,Díaz-Badillo A,Calderon-Aranda ES,Gómez Rdoi
10.1007/s11033-012-1888-1subject
Has Abstractpub_date
2012-12-01 00:00:00pages
10139-56issue
12eissn
0301-4851issn
1573-4978journal_volume
39pub_type
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