Each cell inactivates one X chromosome.

每个细胞中的一条X染色体会失活。

You can't survive without an X chromosome.

离开了X染色体，你将无法存活。

The X chromosome is three times the size of the Y chromosome and carries 100 times the genetic information.

人体X染色体的显微扫描照片。 （得到照片研究中心允许而复制） X染色体是Y染色体的三倍大，而且也传递着比其多100倍的基因信息。

One cell may inactivate the X chromosome from one parent, and another the chromosome from the other parent.

某细胞中，来自父亲的X染色体可能失活，而另一细胞中，失活的则是来自母亲的X染色体。

The secrets of the X chromosome. These women are identical twins.

X染色体的秘密。这两位女性是双胞胎。

In women, a faulty gene on one X chromosome is counteracted by a healthy copy.

对女性而言，那条正常X染色体上的基因完全可以替代另一条X染色体上的异常基因。

So some clusters of cells express the maternal X chromosome, while others express the paternal X.

一些细胞表达的是母系X染色体，而另一些则表达父系的X染色体。

Yeah. Now, they never claimed that the individuals with an extra X chromosome were superfemales.

是的，但是他们从来没有发出过声明，将有额外的X染色体的个体称为超级女性。

Is Photosensitive Epilepsy Less Common in Males Due to Variation in X Chromosome Photopigment Genes?

光敏感性癫痫在男性较少见是否由于X染色头感光色素基因变异?

In one, the X chromosome with the normal gene was turned off in the cells that eventually became eyes.

在发育成眼睛的细胞中，一人的正常绿光感受基因失活。