Well, that's what I'm going to talk about today, is how we're using the tools of genetics, population genetics in particular, to tell us how we generated this diversity, and how long it took.
这正是我今天要讲的。 就是我们怎样用遗传学的方法， 特别是人口遗传学，来说明我们是怎么进化出多样性的， 还有花了多长时间产生多样性的。