Index of opportunity for natural selection among the Gowdas of Kodagahalli village, Karnataka, India.
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Date
2013-07
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Abstract
BACKGROUND: In order to understand how selection is
operating in the Gowda population, the index of opportunity
for selection was calculated and the present findings were
compared with some related findings from other South
Indian (SI) populations.
MATERIALS AND METHODS: Crow (1958) and the
modified method by Johnston and Kensinger (1971) were
used for the present purpose.
RESULTS AND DISCUSSION: The index of total
selection intensity (I) was found to be moderate taking
into consideration the range for many Indian populations.
Considering certain differences in fertility and mortality
heritable, it appears that natural selection play an important
role in shaping the genetic constitution of the Gowda
population. Analysis of data indicates that the index due
to fertility seems to contribute more towards selection
than mortality. This trend might be because of better living
condition and health-care system among the Gowdas which
have a positive impact on the lower contribution of mortality
for the evolution mechanism of the Gowda population
through natural selection.
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Keywords
Fertility, mortality, selection intensity
Citation
Sohkhlet Bhaboklang. Index of opportunity for natural selection among the Gowdas of Kodagahalli village, Karnataka, India. Indian Journal of Human Genetics. 2013 July-Sept ;19 (3): 315-319.