A Hungarian twin study on hand clasping, arm folding and tongue curling

A twin study was performed in adult Hungarian monozygotic and dizygotic pairs for hand clasping, arm folding and tongue curling. Genetic background of these traits could not be confirmed, although there appears to be a positive correlation between hand clasping type and handedness.     

Distribution of A1A2BO and Rho (D) blood groups in tribal populations of Andhra Pradesh, South India.

The paper reports the distribution of A1A2BO and Rho (D) blood groups among five tribal populations, Koya Dora, Raj Gond, Naikpod, Pardhan and Lambadi from three districts of Andhra Pradesh, South India. Blood samples from a total of 1090 unrelated individuals were tested. Koya Doras were, however, sampled from five distant localities to find out intratribal variation, if any. In A1A2BO blood group system the combined frequencies of "P1" and "P2" among the five Koya Groups always exceeded the frequency of "q", a characteristic feature of many tribal populations of Andhra Pradesh. However, among Raj Gond, Naikpod, Pardhan and Lambadi tribes the frequency of "q" is higher than "p" with the maximum in Pardhans. The frequency of "r" is always higher than the combined frequencies of "p1" and "p2" except in Raj Gonds. The higher frequency of "q" over "p" among Naikpod, Pardhan and Lambadi tribes is indicative of a tendency towards the distribution pattern found in North India. A few Rh negative persons were detected only in Koya Dora, Raj Gond and Lambadis indicating that the allele r (cde) is present in these populations, although in a low frequency.     

A study of the A-1A-2BO blood group system and ABO(H) secretion in six endogamous groups of Punjab

2,596 Aroras and 2,629 Khatris comprising six endogamous groups of the Punjabis have been studied for A₁A₂BO blood groups and secretion of ABO(H) group specific substances. The values of chi-square and the genetical difference (G²) among these groups do not show statistically significant differences in these groups regarding the genetical characters studied. There is a closer affinity between Beri and Bunjahi on the one hand and Uttaradhi and Dhakhandian on the other and also between Uttaradhi and Khukhran; Dhakhandian and Sareen show a great difference among themselves as well as with other groups. The comparison of ABO blood group distribution and secretor factor among the different populations of India show that the distribution is similar among the North Indians.