Genetic Drift and Natural Selection in an Isolated Zapotec-Speaking Community in the Valley of Oaxaca, Southern Mexico
作者:
Bertis B. Little,
Robert M. Malina,
期刊:
Human Heredity
(Karger Available online 1989)
卷期:
Volume 39,
issue 2
页码: 99-106
ISSN:0001-5652
年代: 1989
DOI:10.1159/000153842
出版商: S. Karger AG
关键词: Natural selection;Southern Mexico;Zapotec indians;Effective size;Migration (gene flow);Valley of Oaxaca;Population genetic structure;Genetic drift
数据来源: Karger
摘要:
Genetic drift and natural selection were analyzed in a genetically isolated Zapotec-speaking community in the Valley of Oaxaca, southern Mexico. Moderately intense genetic drift and selection potentials were found. Potential for drift was related to (1) the small effective size of the population, and (2) the exceptionally low number of migrants into the population. Potential for selection was due to (1) an unusually high variance in fertility, and (2) a high contribution of prereproductive mortality. Significant potential for genetic evolution was found due to genetic drift and natural selection.
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