Men inherit their Y chromosomes from their fathers.

男性从父亲那里继承Y染色体。

Now males males have one X and one Y chromosome, and females have two X chromosomes.

那么，男性有一个X染色体和一个Y染色体，女性有两个X染色体。

And every male relative of that individual who's a first-degree relative has the same Y chromosome.

而这名男人的所有一级男性亲属都拥有相同的Y染色体。”

Around 7 weeks the male sex organs start to develop because of a gene on 'Y' chromosome called 'SRY'.

大约7周左右，男性性器官开始发育，这是由于“Y”染色体上有一种叫做“SRY”的基因。

You may just have 100 people with the same Y chromosome, because they're all descended from one man.

“可能会有100个人拥有相同的Y染色体，因为他们都是同一个男性的后代。”

Meaning very little changes about the Y chromosome from generation to generation.

这意味着Y染色体在代际传递过程中的变化很少。

All men inherit the Y chromosome not from mom and dad, but just from their dads.

所有男性的 Y 染色体不是来自父母，而是仅仅来自父亲。

The male " Y" chromosome, on the other hand, does not have any color genes.

另一方面，公猫的 Y 染色体没有任何颜色基因。

For example, one recent study found a huge drop in Y chromosome diversity five-to-seven thousand years ago.

比如，最近一项研究发现，Y染色体的多样性在5000至7000年前大幅下降。

Including some on the " Y" chromosome, meaning they can be transferred from both the mother and the father.

其中包含一些在 Y 染色体上的基因，也就是说父母都有可能是你秃头的原因。