SEX-RATIO POLYMORPHISM IN DROSOPHILA-PSEUDOOBSCURA

被引：8
|
作者：
BECKENBACH, AT
机构：
来源：
AMERICAN NATURALIST | 1991年 / 137卷 / 03期
关键词：
D O I：
10.1086/285166
中图分类号：
Q14 [生态学（生物生态学）];
学科分类号：
071012 ; 0713 ;
摘要：
I studied "sex-ratio" (SR) genotype frequencies in two populations of Drosophila pseudoobscura from southeastern Arizona: Bear Creek Canyon and Tucson. Wild-inseminated females were collected, their fecundities measured in the laboratory, and their SR genotypes inferred by cytological analysis of their progenies. A statistically significant fecundity deficiency was observed among SR/SR females from Bear Creek Canyon. The SR frequency in the Tucson population increased at a rate consistent with the operation of meiotic drive unopposed by selection.
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页码：340 / 343
页数：4
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