Abstract
The diverse linguistic and ethnic tribal populations harboring state Chhattisgarh is a hotspot for human genomic diversity research. Genetic analysis of individual variation at the DNA level is widely used to investigate the extent of genetic diversity and to understand the population structure among different populations. The present study was conducted to find out the extent of affinities and diversities among three tribal populations of Chhattisgaarh, India namely Halba, Gadba and Oraon. They belong to different language families. Halba belongs to Indo-European, Gadba belongs to Austro-Asiatic while Oraon belongs to Dravidian language family. Analysis on seven widely distributed polymorphic insertion/deletion loci (Alu APO, Alu ACE, Alu D1, Alu PV92, Alu FXIIIB, Alu CD4 del and Alu PLAT) in 160 unrelated individuals of both sexes were done. All loci were highly polymorphic except Alu CD4 del locus. All the three tribes showed lowest heterozygosity for CD4 locus. GST value was recorded lowest for Alu PLAT locus (0.0004) while the highest was recorded for Alu PV92 locus (0.1029). The unrooted Neighbor-Joining (NJ) tree showed Gadba and Oraon form one cluster while Halba tribe differentiates from them.
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