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  • Title: Distribution, endogamy, and isolation of Malas of Chittoor district, Andhra Pradesh, India.
    Author: Reddy PC.
    Journal: Soc Biol; 1984; 31(1-2):108-13. PubMed ID: 6543997.
    Abstract:
    This study investigates the distribution of Malas, a scheduled caste population of Andhra Pradesh, their isolates in different eco-cultural zones, and their endogamy and isolation by marriage district. The Malas, formerly "untouchables," occupy the lowest status in the Hindu hierarchy. The sample consists of 10% of Malas from 10% of the villages in 2 taluks of Chitoor district of Andhra Pradesh. 6 Mala populations--Tangala, Maladasari, Pakanati, Rampala, Murikinati, and Bommanati--live in the area. These populations show a regionality in their distribution, with very little overlapping even when 2 populations inhabit the same village. Of 885 marriages in the 6 endogamous populations, all but 3 have been contracted between individuals belonging to the same Mala group. The 3 exogamous marriages took place between Mala men and women from another caste. Such small exceptions to the general rule do not mean that the Mala populations are not breeding isolates; these 6 populations satisfy Wright's island model. The high incidence of matings between closely related populations also contributes to their genetic and breeding isolation. Consanguineous marriages range from 26.76 to 38.75%. The distance between the birth place of spouses in miles, called marriage distance, shows a range from 7.72 to 15.71 miles. Lower values mean higher population densities. Groups within each population are isolated by distance and form small overlapping Mendelian populations, approaching a stepping stone model with continuous variation of genetic traits between adjacent groups of people.
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