繁殖后代

Insects propagate themselves by means of eggs.

昆虫以产卵繁殖后代。

Individuals crossing exclusively within the same population produce more progeny than those crossing in both directions and thereby use up some of their gametes for the production of inviable hybrids.

完全在同种群内进行杂体比以两方向进行杂体繁殖后代多，因此为了产生无生机杂种，就消耗掉子。