The genetic relatedness, from an evolutionary standpoint, affects how much you care for other people.

遗传相似度，从进化论的角度看，影响到你关心他人多少。

耶鲁公开课 - 心理学导论课程节选

And in fact, you get his calculations by looking at genetic relatedness.

事实上，你可以从遗传相似度,得到他的推算。

耶鲁公开课 - 心理学导论课程节选