But until 6 or 7 weeks after fertilization, both 'XY' and 'XX' embryos have identical gonads.

但直到受精后6或7周，XY和XX胚胎都有相同的生殖腺。

This is mathematically equivalent to B to the XY modulus M.

这在数学上等同于 B 与 XY 模数 M。

And for those " normal" people with XX or XY, what does that mean?

对于那些拥有 XX 或 XY 的“正常” 人来说，这意味着什么？

They have a mix of chromosome types with X, with XY or with XXX.

它们混合了 X、XY 或 XXX 的染色体类型。

Me, specifically, I have XY chromosomes, which you may have understood to be typically male.

我，具体来说，我有 XY 染色体，你可能已经理解为典型的男性。

You probably learned that when male (XY) and female (XX) chromosomes shuffle and combine, there's a 50% probability of either sex.

大家可能都知道当雄性的 XY 染色体和雌性的 XX 染色体任意组合时生出雌性或雄性的可能性为 50％。

Although on the outside, she was fully female, she had XY chromosomes and these internal testes.

虽然从外表上看， 她完全是女性，但她有 XY 染色体和这些内部睾丸。

So let's add this mean of the xy's to both sides of this top equation.

因此，让我们将 xy 的这个平均值添加到这个最上面的等式的两边。

In my case, it means I was born with XY chromosomes, which you probably know as male chromosomes.

就我而言， 这意味着我出生时带有 XY 染色体，您可能知道它是男性染色体。

This term right here is going to be equal to n times the mean of the products of xy.

此处的此项将等于 n 乘以 xy 乘积的平均值。

So our first xy over here is 1 times 2.

所以我们这里的第一个 xy 是 1 乘以 2。

And we have three of these xy's.

我们有三个这样的 xy。

And biologically speaking, the root cause of sex is a pair of chromosomes: XX for females and XY for males.

从生物学上讲，性别的根本原因是一对染色体：女性为 XX，男性为 XY。

In this case, the individual is biologically male, which means they have a 46, XY karyotype, but their androgen receptors don't respond to testosterone.

这种情况下，患者生物学性别为男性，意味着其染色体核型为46，XY，但他们的雄激素受体不能对睾酮做出反应。

Then the y value is going to be the mean of the xy's divided by the mean of the x's.

然后 y 值将是 xy 的平均值除以 x 的平均值。

Is equal to the mean of the y's minus the mean of the xy's over the mean of the x's.

等于 y 的平均值减去 xy 的平均值除以 x 的平均值。

Times n times the mean of the xy values, the arithmetic mean.

乘以 n 乘以 xy 值的平均值，即算术平均值。

Minus the mean of the xy's.

减去 xy 的平均值。

So the expected value of XY. Now what do we have over here?

所以 XY 的期望值。现在我们这里有什么？

So negative 2 times n times the mean of the xy's, that's the partial of this with respect to m.

所以负 2 乘以 xy 的平均值乘以 n，这就是它相对于 m 的部分。