That's because the gene that's responsible for making G6PD is on the X chromosome.

这是因为X色基因决定G6PD。

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

那么，男性有一个X色和一个Y色，女性有两个X色。

Klinefelter syndrome develops when a gamete, either sperm or egg, contains at least one extra X chromosome.

异常在配子时期就存在了，精子和卵子都有可能发生，异常的配子会多出至少一条X色。

In some cases, it's linked to chromosomal abnormalities like Turner syndrome, where an X chromosome is missing.

在某些情，与色异常有，如Turner综合征，其X色缺失。

Since this is linked to the X chromosome, both Duchenne and Becker muscular dystrophy are called X-linked recessive.

由于发病与X色有联，DMD和BMD被称为X连锁隐性遗传。

In females, though, only one X chromosome gets expressed, and the other is inactivated, called X-inactivation or lyonization.

女性只有一条X色表达，而另一条失活，这就是X色失活（莱昂化）。

The least common karyotype in Turner syndrome is where there's only a part of the X chromosome missing.

特纳综合征中最不常见的核型是X色只有部分缺失。

The most common cause of primary amenorrhea is Turner syndrome, where one X chromosome is either completely or partially absent.

最可能的原发性闭经原因是Turner综合征：有一个X色完全或者部分缺失。

Turner syndrome is a chromosomal disorder where one X chromosome is either completely or partially absent.

特纳综合征是一种色疾病，患者内细胞中有一条X色完全或部分缺失。

Either way the separation doesn't happen and the end result is a gamete with an extra X chromosome.

不管是哪种情，都发生了不分离的现象，最后的结果都是产生了多一条X色的配子。

This means females can have two colors, in addition to white, because they have two " X" chromosomes.

这表示母猫除了白色之外还可以拥有两种颜色，因为们有两条 X 色。

In the 1960s, biologist Susumu Ohno suggested the X chromosome would evolve slowly, and thus remain similar in most mammalian species.

60年代的时候，生物学家Susumu Ohno提出X色进化缓慢，大多数哺乳动物的X色基因是相似的。

Monosomy is what happens in Turner syndrome and it specifically affects the X chromosome.

造成特纳综合征的原因就是单，并且是在单情仅影响X色时。

Because if you got your father's " X" chromosome you would be a female.

因为如果是从父亲那得到 X 色，那你就会是女性。

Studies show that the most influential hair-loss gene is located on the " X" chromosome only.

研究显示造成秃头的基因位于 X 色上。

The fur color gene is located on the " X" chromosome.

毛色基因位于 X 色上。

Klinefelter syndrome is diagnosed with a karyotype which visualizes each chromosome including the X, Y, and extra X chromosomes.

核型分析可观察到患者的每条色，包括X、Y与额外的X色，可用来确诊Klinefelter综合征。

So if your mother does express these traits it means she will be passing an affected " X" chromosome to you.

因此如果你的母亲秃头，你就一定会得到秃头基因。

The most common karyotype is 45, X, which means the person has 45 chromosomes, of which only one is an X chromosome.

最可能的核型是45，X，意味着这个人有45条色，只有一条X色。

In fact, each additional x chromosome increases the estrogen to testosterone ratio, making the changes even more striking.

事实上，每多一条X色，雌激素与睾酮的比值就会变大一些，Klinefelter综合征的病征也会更明显一些。