But many primates, including humans, hae a third photopigment, encoded by a second gene on the X chromosome.
但是多类包括人类有着三种光色素,通过在X染色体二种基因编码。
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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。
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。
Now males males have one X and one Y chromosome, and females have two X chromosomes.
那么,男有X色和Y色,女有两X色。
In some cases, it's linked to chromosomal abnormalities like Turner syndrome, where an X chromosome is missing.
在某些情况下,它与色异常有关,如Turner综合征,其X色缺失。
In females, though, only one X chromosome gets expressed, and the other is inactivated, called X-inactivation or lyonization.
女只有条X色表达,而另条失活,这就是X色失活(莱昂化)。
Turner syndrome is a chromosomal disorder where one X chromosome is either completely or partially absent.
特纳综合征是种色疾病,内细胞中有条X色完全或部分缺失。
The most common cause of primary amenorrhea is Turner syndrome, where one X chromosome is either completely or partially absent.
最可能的原发闭经原因是Turner综合征:有X色完全或部分缺失。
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,并且是在单情况仅影响X色时。
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。
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,因为它们有两条 X 色。
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,意味着这人有45条色,只有条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条X色。
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色有关联,DMD和BMD被称为X连锁隐遗传。
The fur color gene is located on the " X" chromosome.
毛色基因位于 X 色上。
The X chromosome also carries genes that are important for growth and development of tissues throughout the body.
X色还携带很多对全身组织生长和发育很重要的基因。
Well if you're a male you get an " X" chromosome from your mother, but must receive a " Y" chromosome from your father.
男会从母亲那得到其中 X 色,但是定会从父亲那得到 Y 色。
Females can avoid the lethal side-effects if one of their two X chromosomes contains a non-mutated gene-but they will still grow up without tusks.
如果雌的两条X色中有条含有未突变的基因,则可以避免致命的副作用——但她们长大后仍然没有象牙。
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,都发生了不分离的现象,最后的结果都是产生了多条X色的配子。
Females, on the other hand must get two copies of this gene, one on each " X" chromosome in order to physically express it.
而女则必须得到分别位于两 X 色上的秃头基因才会秃头。
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