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Why are sex link traits more common in male than females?

Updated: 3/26/2022
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8y ago

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Sex-linked traits are more common in males than in females. This because recessive allele in the X chromosome and produces the trait in males.

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Laurie Hammes

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2y ago
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8y ago

Sex-linked traits are a special case. They are controlled by genes on the sex chromosomes, X and Y. The female has two X chromosomes and the male has one X and one Y.
Only one X gene is active in the female. The other is inactivated and shows as a Barr Body. Which one will be inactivated is by chance alone.
Both males and females are equally likely to have a recessive allele on one X chromosome. A male does not have another X chromosome.
So, if he has the recessive allele on his one X chromosome, he will have the trait. Period.

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12y ago

Because males have only one X chromosome, males are more likely than females to have a sex-linked trait that is controlled by a recessive allele for a trait and one dominant.

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Q: Why are sex link traits more common in male than females?
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