SEX-CHROMOSOMES AND THE EVOLUTION OF SEXUAL DIMORPHISM
SEX-CHROMOSOMES AND THE EVOLUTION OF SEXUAL DIMORPHISM
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DOI：
10.1111/j.1558-5646.1984.tb00346.x
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发表时间：
1984-01-01
期刊：
影响因子：
3.3
通讯作者：
RICE, WR
中科院分区：
文献类型：
--
作者：
RICE, WR
用一个分析模型探讨了X连锁对性二型性进化的影响。该模型研究了罕见时增加的必要条件，以及产生“性拮抗”表型的基因的平衡频率，即在一个性别中有选择地倾向于而在另一个性别中不受欢迎的表型。一个模拟模型被用来检查性别限制修饰基因的进化，这些基因限制了性别拮抗基因在被选择的性别中的表达。这一分析的结论是，性染色体促进了性二型性的进化，X连锁基因在性二型性特征的编码中起着主导作用。
An analytical model was used to explore the effect of X-linkage on the evolution of sexual dimorphism. The model examined the requisite conditions for increase when rare, and the equilibrium frequency of genes that produce a "sexually-antagonistic" phenotype, i.e., a phenotype that is selectively favored in one sex but disfavored in the other sex. A simulation model was used to examine the evolution of sex-limited modifier genes that restrict the expression of sexually-antagonistic genes in the sex where they are selected against. The conclusion from this analysis is that sex chromosomes facilitate the evolution of sexual dimorphism and that X-linked genes have a predominant role in coding for sexually dimorphic traits.