Rhys had acquired a defective gene on the X-chromosome-inherited from his mother.
里斯的X染色体是一个基因有缺陷（这个X 染色体是从母亲那里继承的）。
The first is that males are more sensitive because they have only one X-chromosome.
第一个理论认为男性更敏感， 谏因为他们只有一个X染色体。
As MeCP2 resides on the X-chromosome, this meant studying male mice as females have two X-chromosomes.
由于MeCP2位于X染色体上，所以他们选择研究雄性老鼠，因为雌性老鼠含有两个X染色体。
In mammals, every cell in females has two X-chromosomes, while every cell in males has a single X-chromosome.
在哺乳动物中，每一个雌性细胞有两条X染色体，而每一个雄性细胞有一条X染色体。
Because these genes are carried on the X-chromosome, they are subject to a process known as X-chromosome inactivation.
由于这些基因存在于X染色体上，它们发生了X染色体失活的处理。
The disease is autosomal-recessive and linked to the X-chromosome, so that men whose mothers are carriers of the gene manifest the disease.
该病属常染色体隐性遗传，与X-染色体关联，所以，母亲是基因携带者的男性表现为发病。
This phenomenon is mostly seen in imprinted genes and X-chromosome inactivation where DNA methylation of promoter regions leads to repression of gene expression.
这种现象主要在印迹基因和X染色体失活区域看到，这些区域中的启动子区的DNA甲基化导致了基因表达的抑制。
To assess the clonal origin of renal clear cell carcinomas by the study of X-chromosome inactivation pattern in female clear cell renal carcinomas and normal renal tissues.
本实验将通过研究女性肾透明细胞癌及正常肾组织的X染色体失活类型判断肾透明细胞癌克隆起源。
Most interesting was what the scientists discovered about the X chromosome in humans and chimpanzees.
最有趣的要数科学家们在人类和黑猩猩X染色体上的发现。
Men who carry the faulty genes can only pass them on through their X chromosome to their daughters.
这些男子自身携带的异常基因，只能通过传给自己女儿的x染色体继续传递下去。
This leaves men at a disadvantage since they only have one X chromosome. Women have two, so that even when immunity genes are silenced on one the other can compensate.
这使只有一条X染色体的男性处于不利地位，而女性拥有两条，所以即使一条上的免疫基因不能发挥作用，另一条上的也能起到弥补作用。
In a few cases, women may have two distinct green cones on either X chromosome.
在少数情况下，妇女也可能有两个X染色体上不同的绿色视锥。
Hemophilia is caused by a mutation—likely spontaneous in Victoria‘s case—on the X chromosome and can be passed along the maternal line of families.
血友病源于X染色体上的一种突变——很可能是维多利亚女皇自身发生的一种突变，可经由遗传系统传给家族后代。
They suggest that genes on the X chromosome play a role in autism.
他们说x染色体的基因在自闭症中起着作用。
I'm sensitive, creative and artistic, and perhaps that comes from my extra X chromosome.
我有同情心、有创造力、有艺术气质，或许这正是那条多出的X染色体赋予我的。
Now some of these [disease genes] may be on the X chromosome, [meaning that women who have the second X chromosome with which to compensate, would have an advantage].
现在猜测这些疾病基因可能在X染色体上面，这意味着女性有着第二条基因去抵消的优势。
Challenge: a mutation on the X chromosome is the most common known cause of autism.
挑战：X染色体上的突变是最常见的自闭症病因。
Fragile X syndrome, a single genetic mutation on the X chromosome, is the most common source of inherited mental impairment, affecting one in every 4,000 boys and one in every 6,000 girls.
脆性X综合征，一个X染色体上的基因突变，是遗传性智力障碍最常见的来源，每4000名男孩和每6000名女孩中就有一名儿童患有该症。
Fragile X syndrome, a single genetic mutation on the X chromosome, is the most common source of inherited mental impairment, affecting one in every 4, 000 boys and one in every 6, 000 girls.
脆性X综合征，一个X染色体上的基因突变，是遗传性智力障碍最常见的来源，每4000名男孩和每6000名女孩中就有一名儿童患有该症。
Men may have an extra X chromosome or two on top of their normal XY combination.
男人可能有除了他们的正常的XY组合以外还有额外的1个或2个X染色体。
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。
Remember, males will show symptoms of the disease if their only X chromosome is defective.
要记住的是，如果男性唯一的X染色体抵御疾病，就会表现出疾病的症状。
Boys are usually more severely affected with the condition - which is the leading known cause of autism - because they have only one X chromosome.
在正常情况下，该蛋白对大脑突触形成相关蛋白的形成起调控作用。男孩患有此种病症——这是已知的造成孤独症的主要原因，这仅仅是因为他们只有一条X染色体。
Because men have only one X chromosome that they inherit from their mother and thus only one copy of the TEX11 gene, any mutation could theoretically lead to sterility.
因为男性只有一条从母亲那里遗传来的X染色体，因此他们的TEX11基因只有一个拷贝，理论上来说，TEX11基因的任何突变都可以导致不育。
Women with the syndrome are missing one or part of their second X chromosome.
患有特纳综合症的女性往往缺失一种或部分第二X染色体。
The dystrophin gene is found on the X chromosome and passed on to children through a mother who is a carrier.
肌营养不良卵白基因位于人类X染色体，携带基因突变的母亲会遗传给婴儿。
X chromosome mosaicism is not the only genetic difference between males and females.
染色体嵌合现象并不是男性与女性之间唯一的基因差别。
If you have both the risk variants we discovered on chromosome 20 and the unrelated known variant on the X chromosome, your risk of becoming bald increases sevenfold.
如果你的染色体上有两个基因变异：我们发现的位于20号染色体上的变异和人们以前就知道的X染色体上的变异，您患秃发的风险将增加七倍。
If you have both the risk variants we discovered on chromosome 20 and the unrelated known variant on the X chromosome, your risk of becoming bald increases sevenfold.
如果你的染色体上有两个基因变异：我们发现的位于20号染色体上的变异和人们以前就知道的X染色体上的变异，您患秃发的风险将增加七倍。
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