53 间接选择自体受精/选型交配修饰语与当地适应(]。草图自交或如何选型交配修饰词的发展在当地存在的适应(为了说明,等位基因会导致最大分类和年代指定随机交配)。这里分类可以由自交或选型交配基于基因型在当地适应轨迹(配偶和一个)。在迁移之前(步骤1),考虑两个栖息地与单倍体的个体。左边一个等位基因在当地的更适应轨迹,而喜欢在右边。为了使事情简单,我们认为这些等位基因是固定的,它们是有益的。在第2步,栖息地之间发生迁移(m = 1/2,移民在红色)。然后两性生殖发生在每一个栖息地。小圆圈表示二倍体个体。在每一个栖息地,一个人可以完全区分群S-assortment等位基因(4个人在左边)和随机交配s等位基因(4个人在右边)。重要的是,在这一步骤中S等位基因变得极端aa和aa比如呈正相关(因此,方差在健身的分组人口大S等位基因)。 Finally, selection occurs (favoring A on the left and a on the right, very strongly but in a codominant way in the illustration). At the end of this generation, the modifier has not changed in frequency (it is still 1/2). Yet, selection has generated LD between the random mating s allele and the locally inferior allele locally (the inferior allele is only found on the same chromosome as s in each habitat, orange dot). At the next generation, this LD will persist (it is decreased at most by one half by a round of free recombination) and cause indirect selection in favor of S. Note that if the locally beneficial allele is recessive (all heterozygotes eliminated on the right and the left), we see that direct selection occurs favoring S (its frequency rises to 2/3 on the sketch), but that less LD is generated. Exactly the opposite occurs if the local beneficial allele is dominant.