Allelic frequency of phenylthiocarbamide tasters and non-tasters in different human populations of Eastern Uttar Pradesh

Phenylthiocarbamide (PTC) chemical tastes bitter and its tasting is a genetically determined trait. People with PTC tasting ability are dominant for this trait while those who can not taste this chemical are recessive for the character. Seven human populations from five districts of eastern Uttar Pradesh were analyzed for the distribution of tasters and non tasters for PTC chemical. The frequency of dominant and recessive alleles of this gene was also calculated. In all the populations the tasters were much higher in number than non-tasters. The frequency of T allele is higher than t in most of populations except schedule caste population. The allelic frequency of T ranged from 0.37 to 0.68 whereas the frequency of recessive allele ranged from 0.32 to 0.63. The frequencies of dominant and recessive alleles are almost equal in Hindus and Muslims.