Sexual selection and the evolution of evolvability
Sexual selection and the evolution of evolvability
复制标题
性选择和进化性的进化
DOI：
10.1038/sj.hdy.6800921
复制
发表时间：
2007
期刊：
影响因子：
3.8
通讯作者：
G. Roberts
中科院分区：
文献类型：
--
作者：
M. Petrie;G. Roberts
在这里，我们展示了性选择可以对突变率产生影响。我们模拟了有性选择和无有性选择的有性群体中突变率的遗传修饰物的命运(使用女性选择机制建模)。女性对“好基因”的选择应该减少男性受试者之间的变异性，留下足够的差异来维持女性的偏好。然而，女性的选择实际上可以通过支持更高的性别选择特征突变率来增加遗传变异性。增加突变率将被选中，因为由此导致的平均适应度下降。然而，这也增加了出现罕见有益突变的可能性，而女性偏爱携带有害突变很少的男性受试者的交配扭曲可能会导致突变率高于自然选择下的预期。选择两个男性受试者就足以使突变率增加两倍，而不是在随机交配下发现的下降。
Here we show that sexual selection can have an effect on the rate of mutation. We simulated the fate of a genetic modifier of the mutation rate in a sexual population with and without sexual selection (modelled using a female choice mechanism). Female choice for ‘good genes’ should reduce variability among male subjects, leaving insufficient differences to maintain female preferences. However, female choice can actually increase genetic variability by supporting a higher mutation rate in sexually selected traits. Increasing the mutation rate will be selected against because of the resulting decline in mean fitness. However, it also increases the probability of rare beneficial mutations arising, and mating skew caused by female preferences for male subjects carrying those beneficials with few deleterious mutations (‘good genes’) can lead to a mutation rate above that expected under natural selection. A choice of two male subjects was sufficient for there to be a twofold increase in the mutation rate as opposed to a decrease found under random mating.
影响因子：
3.3
作者：
David Houle;B. Morikawa;Michael Lynch
通讯作者：
David Houle;B. Morikawa;Michael Lynch