出典:Wiktionary
assortative mating (countable かつ uncountable, 複数形 assortative matings)
出典:Wikipedia
出典:『Wikipedia』 (2011/02/23 00:25 UTC 版)
Assortative mating (also called assortative pairing) is the phenomenon where a sexually reproducing organism chooses to mate with individuals that are similar (positive assortative mating) or dissimilar (negative assortative mating) to itself in some specific manner. In evolution, these two types of assortative mating have the effect, respectively, of increasing or reducing the range of variation (trait variance), when the assorting is cued on heritable traits. Positive assortative mating, therefore, results in disruptive natural selection, and negative assortative mating results in stabilized natural selection.