Infertility has been relatively neglected as both a health problem and a subject for social science research in South Asia, as in the developing world more generally. The general thrust of both programmes and research has been on the correlates of high fertility and its regulation rather than on

Indian society consists of immensely varied political, social, ethnic, linguistic, religious and community groups, which, by and large, reside in villages, where poverty, misconceived religious notions, social customs, illiteracy, ignorance and superstitions prevail.

The tribal population groups from 7.95 percent of the total population of India. About 67.76 million persons have been enumerated in the country (excluding Jammu & Kashmir) as members of the Scheduled Tribes (1991 census).

After Ritter and Hinkelmann, Kirk and his Colleagues Kirk also reported that in matings where the father is in-compatible with the mother with respect to the ABO groups, the children show a higher frequency of the Hp1 gene.