Opportunity for natural selection among the Indian populations

Abstract

A critical review of data on opportunity for natural selection among the Indian populations has been made. These data on 96 populations were analysed according to regional, habitat, and socioeconomic backgrounds. The trends observed on the basis of these Indian data have been compared with worldwide data and data from industrialized nations. As in the industrialized nations, a gradual decrease in I(m) and I(t) is observed with improving socioeconomic and technological status in the Indian populations. The Indian situation is similar to that of the first phase in the modern demographic transition among the industrialized nations.

Natural Selection Intensity among the Paki: An Endogamous Population of Andhra Pradesh

“…The averages of Andhra caste populations (Reddy and Chopra 1990) are also higher than the present values. Considering the proportion of fertility and mortality components to the total selection, the fertility component is higher than mortality component in the present community, though it belonged to low socio-economic stratum.…”

Demographic Structure and its implications among two breeding isolates of Mali Tribe from Andra Pradesh, India

“…Recent studies on natural selection intensity among six tribal and four caste populations of this region also show higher contribution of fertility to total selection. The total selection intensity index values of present sub tribes are lower than averages of world population and of Andhra populations reported by Spuhler (1976) and Reddy and Chopra (1990), respectively. The Indian average (Reddy and Chopra, 1990) is nearer to the present values.…”

“…The total selection intensity index values of present sub tribes are lower than averages of world population and of Andhra populations reported by Spuhler (1976) and Reddy and Chopra (1990), respectively. The Indian average (Reddy and Chopra, 1990) is nearer to the present values. In the present breeding isolates, the size of the breeding population (N) is nearer to the effective population size (Ne).…”

Opportunity for natural selection among three endogamous subpopulations of Andhra Pradesh

“…Reddy and Chopra (1990) [15] reviewed data on opportunity for natural selection (Crow's index) in 96 Indian populations and analyzed them according to regional, habitat and socioeconomic backgrounds. It has been seen that the total index varies from 0.258 among [15] Bramhin I 450 0.1270 0.1800 0.3300 Rajani Kumari et al [9] Brahmin II 196 0.0396 0.3484 0.3879 Sita Lakshmi [24] Brahmin III 212 0.1823 0.2247 0.4384 Sree Krishna [25] Kshatriya 355 0.0987 0.2982 0.4263 Dharani Priya et al [13] Jalari 197 0.1880 0.1030 0.3100 Rajani Kumari et al [9] Mala 325 0.2170 0.2940 0.5750 Reddy and Lakshmanudu [26] Reddy I 87 0.4240 0.2270 0.7470 Rao and Murty [18] Reddy II 250 0.1979 0.3859 0.6233 Chandrasekhar Reddy and Sudarsan Reddy [28] Reddy Pedakanti 55 0.1650 0.2310 0.4340 Reddy and Reddy [29] Vodde I 250 0.2340 0.1602 0.4318 Chandrasekhar Reddy and Sudarsan Reddy [28] Vodde II 697 0.3460 0.2530 0.6870 Reddy et al [27] Relli 132 0.2430 0.2820 0.5935 Ramesh [30] I m I f /P s I Chakali 112 0.2013 0.4261 0.6274 Babu et al [10] Kummari 69 0.3235 0.6337 0.9572 Babu et al [10] Mangali 119 0.1972 0.4820 0.6792 Babu et al [10] Madiga 105 0.2281 0.4676 0.6957 Babu et al [10] Yadava 114 0.3326 0.2501 0.5827 Rajeswari et al [31] Vadabalija 135 0.6095 0.2488 0.8583 Rajeswari et al [31] a sub group of Yanadi tribe to 2.25 among the Kota.…”