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

这是因为X体基因决定G6PD。

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

那么，男性有一个X体和一个Y体，女性有两个X体。

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

异在子时期就存在了，精子和卵子都有可能发生，异子会多出至少一X体。

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

在某些情况下，它与体异有关，如Turner综合征，其X体缺失。

5.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体有关联，DMD和BMD被称为X连锁隐性遗传。

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

女性只有一X体表达，而另一失活，这就是X体失活（莱昂化）。

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

特纳综合征中最不见核型是X体只有部分缺失。

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

最可能原发性闭经原因是Turner综合征：有一个X体完全或者部分缺失。

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

特纳综合征是一种体疾病，患者体内细胞中有一X体完全或部分缺失。

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

不管是哪种情况，都发生了不分离现象，最后结果都是产生了多一X体子。

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

这表示母猫除了白之外还可以拥有两种颜，因为它们有两 X 体。

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

60年代时候，生物学家Susumu Ohno提出X体进化缓慢，大多数哺乳动物X体基因是相似。

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

造成特纳综合征原因就是单体，并且是在单体情况仅影响X体时。

14.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 体，那你就会是女性。

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

研究显示造成秃头基因位于 X 体上。

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

毛基因位于 X 体上。

17.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每体，包括X、Y与额外X体，可用来确诊Klinefelter综合征。

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

因此如果你母亲秃头，你就一定会得到秃头基因。

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

最可能核型是45，X，意味着这个人有45体，只有一X体。

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

事实上，每多一X体，雌激素与睾酮比值就会变大一些，Klinefelter综合征病征也会更明显一些。