Genetic studies on the Koya Dora and Konda Kammara tribes of Andhra Pradesh, India.

A total of 209 persons belonging to the Koya Dora and Konda Kammara tribes in the East Godavari District of Andhra Pradesh, have been tested for electrophoretic variation in 9 red cell enzyme systems. The gene frequencies for the systems showing variation are, in general, within the range for other Andhra Pradesh tribal populations. There is 1 example of PHI 2-1 in the Konda Kammara, while 1 case each of PHI 3-1 and 2-1 are reported in the Koya Dora. In PGM1, there is one example of the 6-2 phenotype and one of 4-1 in the Koya Dora. The Koya Dora show a relatively lower frequency of the EsD2 allele compared to the Konda Kammara. The gene frequencies for the GLO system are reported here for the first time among Indian tribals and these are within the Indian range. LDH Calcutta 1 was not detected in either population.