Population Genetic Analysis among Five Indian Population Groups Using Six Microsatellite Markers

Genetic variation at six tetranucleotide microsatellites (HUMTHO1, HUMVWA, F13A01, D3S1359, D12S66, and D12S67) has heen determined in five endogamous ethnic population groups of India belonging to two major linguistic families. The populations analyzed were Konkanastha Brahmins and Marathas (Maharashtra state) from the Indo-Aryan linguistic family and Nairs, Ezhavas, and Muslims (Kerala state) from the Dravidian family. All six loci show high gene diversity, ranging from 0.63 +/- 0.04 to 0.84 +/- 0.02. The average GST value observed was 1.7%, indicating that the differences between the populations account for less than 2% of the diversity, while the genetic variation is high within the five population groups studied (>98%). The phylogenetic tree fails to show any clear cluster. The absence of any cluster along with low average GST is suggestive of substantial genetic similarity among the studied populations, in spite of clear geographical, linguistic, and cultural barriers. This similarity indicates either a greater gene flow between these groups or, alternatively, may reflect a recent evolution for them, considering that the Indian caste system evolved only about 3000 years ago

Allele · Analysis of molecular variance · Biology · Caste · Endogamy · Ethnic group · Evolutionary biology · Gene · Gene flow · Genetic diversity · Genetic variation · Geography · Linguistics · Microsatellite · Phylogenetic tree · Population · Sociology · Anthropology · Demography · Forensic and Genetic Research · Genetic diversity and population structure · Genetics · Identification and Quantification in Food

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