ArticleMolecular biology reports2012
Haplotype analysis of the polymorphic 17 YSTR markers in Kerala nontribal populations.
Article in Molecular biology reports, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The origin of the Kerala non tribal population has been a matter of contention for centuries. While some claim that Negritos were the first inhabitants, some historians suggest a Dravidian origin for all Keralites. The aim of our study has been to provide sufficient scientific evidence based on Y chromosome short tandem repeat (Y STR) analysis for tracing the paternal lineage and also to create a database of the Y STR haplotype of the male population for future forensic analysis. Whole blood samples (n = 168) were collected from unrelated healthy men of the Kerala non-tribal population over a period of 2 years from October 2009. Genomic DNA was extracted by salting out method. All samples were genotyped for the 17 Y STR loci by the AmpFLSTR Y-filer PCR Amplification Kit. The haplotype and allele frequencies were determined by direct counting and analyzed using Arlequin 3.1 software, and molecular variance was calculated with the Y chromosome haplotype reference database online analysis tool, www.yhrd.org . Haplotype diversity was calculated using HaPYDive ( http://portugene.com/hapydive.html ). The majority of haplotypes were unique (149/168). The variant allele 17.1 was observed in DYS 385 loci in three samples. Fifteen samples (8.93%) showed the presence of alleles that are not within the established marker range denoted as outside marker range (OMR). The allele frequency of Kerala non tribal population ranged from 0.00003 to 0.5809. The most polymorphic single locus marker was DYS 458. The haplotype diversity value for Kerala non tribal population was 0.9978. The pairwise difference value ranged from 0.0531 to 0.0854 on comparison of the haplotypes of the Kerala non tribals with other Indian populations. The multi dimensional scaling plot depicted the proximity of Kerala non tribal population with Vasterbotten population (Swedish) and Paiwan, Patyal population of Taiwan, Thailand, and Zhuang population of China. The results of the study indicate towards a European paternal lineage in the non tribal Kerala population.
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