An empirical test of the meiotic drive models of hybrid sterility: sex-ratio data from hybrids between Drosophila simulans and Drosophila sechellia.
An empirical test of the meiotic drive models of hybrid sterility: sex-ratio data from hybrids between Drosophila simulans and Drosophila sechellia.
复制标题
杂交不育减数分裂驱动模型的实证检验：来自模拟果蝇和果蝇之间杂交的性别比数据。
DOI：
10.1093/genetics/130.3.507
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发表时间：
1992
期刊：
影响因子：
3.3
通讯作者：
Wu,CI
中科院分区：
文献类型：
--
作者：
Johnson,NA;Wu,CI
最近，关于隔离种群减数分裂驱动系统的分化可以产生动物杂交中观察到的生殖隔离模式的假说，有很多讨论。这一假设的一个预测是，具有异种性染色体的杂交种的性别比应该大大偏离孟德尔期望的50%的雌性。从我们的果蝇杂交研究中的性别比数据中，我们发现没有这样的偏差：具有不同常染色体背景的导入异种Y染色体的雄性后代的性别比与纯物种的性别比没有差异。我们还讨论了当前减数分裂驱动模型的其他方面。
Recently, there has been much discussion regarding the hypothesis that divergence of meiotic drive systems in isolated populations can generate the patterns of reproductive isolation observed in animal hybridizations. One prediction from this hypothesis is that the sex ratio of hybrids with heterospecific sex chromosomes should greatly deviate from the Mendelian expectation of 50% female. From sex-ratio data in our Drosophila hybridization studies, we find no such deviation: the sex ratio of offspring of males with introgressed heterospecific Y chromosomes with various autosomal backgrounds does not differ from that of the pure species. We also discuss other aspects of the current meiotic drive models.