Reinhold K, Engqvist L, Misof B, Kurtz J
Institut für Evolutionsbiologie und Okologie, Universität Bonn, Germany.
Proc Biol Sci. 1999 Jul 7;266(1426):1341-5. doi: 10.1098/rspb.1999.0785.
As a special version of the good-genes hypothesis, it was recently proposed that females could benefit from choosing drive-resistant males in a meiotic drive system. Here, we examine with a three-locus, six-allele population genetic model whether female choice for drive resistance can evolve. An allele leading to female preference for drive-resistant males was introduced at low frequency into a population polymorphic for meiotic drive and drive resistance. Our simulations show that female choice of drive-resistant males is disadvantageous when resistance is Y-linked. This disadvantage occurs because, at equilibrium, drive-resistant males have lower reproductive success than drive-susceptible males. Thus, female choice of drive-susceptible males can evolve when resistance is Y-linked. When resistance is autosomal, selection on female choice for drive resistance is less strong and depends on the frequency of choice: female preference of resistant males is favoured when choice is rare and disadvantageous when choice is frequent, leading to a stable equilibrium at a low frequency of the choice allele. Independent of the location of drive resistance alleles, males with the non-driving allele always have above average reproductive success. Female choice is therefore beneficial when choosy females prefer males with the non-driving allele.
作为“优质基因假说”的一个特殊版本，最近有人提出，在减数分裂驱动系统中，雌性选择对驱动具有抗性的雄性可能会从中受益。在此，我们使用一个三基因座、六等位基因的群体遗传模型来研究对驱动抗性的雌性选择是否能够进化。一个导致雌性偏好对驱动具有抗性的雄性的等位基因以低频率被引入到一个在减数分裂驱动和驱动抗性方面具有多态性的群体中。我们的模拟结果表明，当抗性是Y连锁时，雌性选择对驱动具有抗性的雄性是不利的。这种不利情况的出现是因为，在平衡状态下，对驱动具有抗性的雄性的繁殖成功率低于对驱动敏感的雄性。因此，当抗性是Y连锁时，雌性选择对驱动敏感的雄性能够进化。当抗性是常染色体遗传时，对驱动抗性的雌性选择上的选择压力较小，并且取决于选择的频率：当选择罕见时，对抗性雄性的雌性偏好是有利的，而当选择频繁时则是不利的，这导致选择等位基因在低频率时达到稳定平衡。与驱动抗性等位基因的位置无关，具有非驱动等位基因的雄性总是具有高于平均水平的繁殖成功率。因此，当挑剔的雌性偏好具有非驱动等位基因的雄性时，雌性选择是有益的。
