Feminization of complex traits in Drosophila melanogaster via female-limited X chromosome evolution.

摘要: A handful of studies have investigated sexually antagonistic constraints on achieving sex-specific fitness optima, although exclusively through male-genome-limited evolution experiments. In this article, we established a female-limited X chromosome experiment, where used an balancer to enforce the inheritance matriline, thus removing exposure male selective constraints. This approach eliminates effects selection chromosome, permitting toward single optimum. After multiple generations selection, found strong evidence that body size and development time had moved female-specific optimum, whereas reproductive locomotion activity remained unchanged. The changes in are consistent with previous results, suggest is enriched for genetic variation controlling these particular traits. lack change could be due number mutually nonexclusive explanations, including variance those traits or confounding use chromosome. study first employ female-genome-limited adds understanding complexity variation.