And this first one would be crossing over.

第一机制是体交叉互换。

This is when an individual's chromosomes, which are are inherited from each of the parents, cross over one another, enabling genes from one chromosome to swap places with genes from another.

这是当从每父母那里继承体体相互交叉时，使一体能够另一体交换位置。

First one is crossing over during meiosis.

第一是减数分裂期间体交叉互换。

To put it simply, during meiosis, the process in which gametes[3] are created, chromosomal crossover occurs.

简而言之，在减数分裂过程中， 即产生配子 [3] 过程中，会发生体交叉。

But if we didn't have crossing over, all the genes that are found on that one chromosome, which is you know hundreds of genes, would just kind of travel together through time.

但如果我们没有体交叉互换，那么位于同一条体上所有，你知道， 有数百，就会随着时间推移而一起移动。

On top of, and here we also see crossing over occurring right there.

此外，我们还可以看到体交叉互换正在此处发生。

And in crossing over what happens is the homologous chromosomes, in other words the chromosome from dad and the chromosome from mom, will actually wrap around each other and they'll share some of that information.

在体交叉互换过程中， 同源体，也就是来自父亲体和来自母亲体，会实际缠绕在一起并交换部分信息。