Population Structure and  Variation among the tribals of Madhepura  (Bihar)

Ritu Raj; Arun Kumar; Salim Zafar; Nitisha Nayan; Nupur Priya

Volume : V, Issue : VI, June - 2016

Population Structure and Variation among the tribals of Madhepura (Bihar)

Ritu Raj, Arun Kumar, Salim Zafar, Nitisha Nayan, Nupur Priya

Abstract :

 The Genetic status of two predominant tribal populations namely Munda and Oraon of Bihar have been studied for their genetic characters. Reproductive adaptability has been studied on the basis of the parameters of marriage practices like age of parents at the time of marriage and matrimonial distance. Certain natural phenomenon like age at menarche, waiting time, fertility, primary sterility, twining have been studied on a comparative basis. Preadolescent mortality and net reproductive index have been recorded and finally selection intensity in the two populations has been calculated which comes to very comparable figures of 0.344 in Munda and 0.337 in Oraon