他们在远离非洲的过程中丢失了一部分遗传变异，”Rosenberg说。

So there is a loss of genetic diversity with the distance from Africa, " Rosenberg said.

youdao

他们在远离非洲的过程中丢失了一部分遗传变异，”Rosenberg说。

So there is a loss of genetic diversity with the distance from Africa, " Rosenberg said.

youdao