毫无疑问，个体差异有遗传基础，但认为社会定义的群体可以通过遗传解释却是错误的。

While there's an undoubted genetic basis to individual differences, it is wrong to think that socially defined groups can be genetically accounted for.

youdao

因为好斗的个体更有可能生存和繁殖，所以任何与好斗行为相关的基因都更有可能遗传给后代。

Because aggressive individuals are more likely to survive and reproduce, whatever genes are linked to aggressive behavior are more likely to be transmitted to subsequent generations.

youdao

我们现在意识到了这一现象对个体间遗传差异所产生的巨大作用。

We now appreciate the immense contribution of this phenomenon to genetic differences between individuals.

youdao