And one bit of evidence that these genes are implicated is that some unfortunate people have point mutations in these genes.

证明这些基因起作用的一些证据,是这些基因会在某些不幸的人身上,发生点突变

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Animals that are altruistic even to the point of dying to help another, those genes will, under some circumstances, be preserved over the genes of people who are less caring.

有强烈利它主义的动物,甚至为其他动物牺牲自己，这些基因在某些情况下，就会被保存下来,而那些不关心他人的基因则不会。

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