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If you are a carrier of a sex-linked genetic disorder, you will carry that disorder based on your sex hormones, because they influence the appearance of the trait. A person who carries the trait will have the disease but may not show it. ---- Sex-linked disorders are genetic disorders linked directly to a human's chromosomes. In the case of chromosomes, females (XX) give an X chromosome to their offspring. Males (XY) can give either an X or a Y chromosome to their offspring. Because only males can have a Y chromosome, sex-linked disorders usually occur in males.

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8y ago
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12y ago

To start with, you need to understand how. After the process of making a child, the father has a 50/50 chance of carrying an X or Y sex-chromosome. The female will always pass a X chromosome. If two X's are combined, it's a girl. If X (from mother) and a y (father) are combined, it's a boy

Now down to the why.

Let's say that it's colorblindness we are dealing with. And it is caused by an abnormal (recessive) sex gene on the X chromosome. If you remember in school about alleles and genes, it requires 2 recessive alleles to have a recessive trait. It takes only one dominant allele to negate the effect of a recessive allele. In a case of a sex-linked disorder, let's say you are a girl. You have a dominant X and recessive x. This is Xx. You have a 50/50 chance of passing on the recessive trait (x) the reason why males get these things more often because the y they receive has no effect whatsoever; regardless of dominant nor recessive. So therefore it takes only 1 recessive allele to give a male that trait. As oppose to females that need two recessive alleles to give them the disorder.

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13y ago

With the exception of Turner's syndrome, all the diseases mentioned so far have been autosomal, or related to chromosomes 1 - 22 (that is, not related to the sex chromosomes - X and Y). Sex-linked disorders are the opposite - related to the sex chromosomes. These disorders, (also called X-linked), are recessive, involve the X chromosome, and affect males almost exclusively. Females are virtually never affected by these disorders because they possess two X chromosomes, both of which would have to carry the defective gene in order for it to be manifested. Since these females' fathers would be affected by the disorder, which is usually debilitating or fatal, this is a highly unlikely situation

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12y ago

only recessive sex-linked disorders occur more often (dominant are more common in females) because they only have one X chromosome

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8y ago

Men only have one of each type of chromosome - XY - while women have two X chromosomes so they have a chance of having one chromosome overpower the disorder with a healthy set of DNA.

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Q: Why do men have more sex-linked disorders than women?
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