Chromosomal inversion polymorphisms and adaptation

被引:195
作者
Hoffmann, AA [1 ]
Sgrò, CM [1 ]
Weeks, AR [1 ]
机构
[1] La Trobe Univ, Ctr Environm Stress & Adaptat Res, Bundoora, Vic 3086, Australia
基金
澳大利亚研究理事会;
关键词
D O I
10.1016/j.tree.2004.06.013
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Chromosomal inversion polymorphisms continue to be identified from an increasing number of populations of insects, plants, bacteria and humans. In the fruit fly Drosophila, chromosomal polymorphisms were used in classic studies of natural selection. Recent molecular genetic studies suggest that inversion polymorphisms are dynamical systems. These studies also indicate patterns of disequilibrium and variation that are consistent with co-adapted gene complexes. Although these complexes have yet to be identified, recent studies have identified traits, such as body size, that are linked to inversion polymorphisms. Selection acting on these polymorphisms is strong because latitudinal clines in inversion frequency become re-established rapidly after a new continent is colonized. A combined molecular and phenotypic approach is helping to identify the role of inversion polymorphisms in adaptive divergence, but the genes responsible for associations between traits and inversion polymorphisms remain to be identified.
引用
收藏
页码:482 / 488
页数:7
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