As part of a study of anthropological characteristics of South Sinai populations, taste sensitivity to phenylthiocarbamide (PTC) was studied in the Gebeliya, Muzeina, Hammada, Alifat, Qararsha and Awad Said Beduin tribes. 422 individuals, representing approximately 5% of the total population of these tribes, were investigated. The frequencies of the recessive gene t responsible for the nontaster character was used for interpopulation comparisons. Most of the Beduin studied were characterized by a high frequency of the t gene, 0.822, 0.751, 0.751 and 0.646 in the Qararsha, Hammada, Aliqat and Muzeina tribes, respectively. In the Gebeliya and Awad Said, the frequency was somewhat lower, 0.541 and 0.510, respectively. The observed intertribal differences may be explained by the effect of genetic drift in isolated populations, but the known admixture of Negroid and/or Southeast European populations offers another possible explanation for the diminished t gene frequency in the latter two tribes.
|State||Published - 1983|