Some groups that had descended from the same parent population were no longer reproductively compatible—they had evolved into separate species.

一些由同一亲本群体进化而来的群体在繁殖上不再相容——他们进化成了不同的物种。

youdao

I should remind you that the parent population contains multiple references to parents based on their fitness.

我应该提醒您，基于亲本的适合度，亲本种群包含有对亲本的多个引用。

youdao

The second parent is picked at random from the parent population.

另一个双亲是 随机地从双亲人群中挑选的。

youdao

Ms. LINDA REEDY (Gay Parent): It's as if a whole segment of the population of the country and maybe the world are telling me personally that I'm not fit to be a parent, when I know that every day, my whole life is about being a parent.

NPR: Religious Exemption Sought for Gay Adoption Law

One family in five in social housing is headed by a single parent, triple the percentage of the population at large.

ECONOMIST: Urban policy