Natural selection, which usually promotes only selfish behavior, can reward this kind of cooperative behavior, called kin selection, because relatives contain many of the same genes.

通常只会鼓励利己行为的自然进化，也会奖励这种合作行为，称为血亲进化，因为亲属之间包含很多相同的基因。

youdao

So there is a conflict of wanting to be close to your kin and kind, but not too close.

因此，想和自己亲戚或同类很近，但不能太近，这是一个冲突。

youdao

So there is a conflict of wanting to be close to your kin and kind, but not too close.

因此，想和自己亲戚或同类很近，但不能太近，这是一个冲突。

youdao