Reexamination of diversifying selection of polymorphic allozyme genes by using population cages in Drosophila melanogaster

T. Yamazaki, S. Kusakabe, H. Tachida

研究成果: Contribution to journalArticle査読

15 被引用数 (Scopus)

抄録

Several investigators have reported increased heterozygosity for allozyme markers in laboratory experiments simulating a variable environment and have concluded that there is diversifying selection for allozyme variants. We found no change in heterozygosity in 28 large population cages where temperature, food, and light were each set at three levels, two constant and one variable, in a factorial design. Specifically, there was no change in heterozygosity when 0, 1, 2, or 3 factors were variable. The discrepancy between our negative results and earlier positive ones is that our experiments were started from a large caged population of flies which had been maintained for 6 years - long enough to be very near to linkage equilibrium. We suggest that the earlier results may have been the result of linkage between neutral, or nearly neutral, allozyme markers and selected loci or in some cases, inversions.

本文言語英語
ページ(範囲)5789-5792
ページ数4
ジャーナルProceedings of the National Academy of Sciences of the United States of America
80
181
DOI
出版ステータス出版済み - 1983

All Science Journal Classification (ASJC) codes

  • 一般

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