After entering the society of civilization, the relations of the male and female have evolved from crossbred of mating group to the monogamy.

进入文明社会以后，人类两性关系从群婚杂交演变为一夫一妻制。

youdao

Since bipeds of the featherless variety generally prefer individual to group mating displays, the benefits of kin selection are less pronounced in humans.

ECONOMIST: Team players