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19 February, 05:55

Explain why it is impossible for a man to be a carrier of a sex-linked trait.

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  1. 19 February, 08:21
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    Because it contains two different sex chromosomes

    Explanation:

    Man in its genome contains two sex chromosomes, X and Y, while woman contains two X chromosomes.

    In order to be a carrier of a sex-linked trait, a person should have one copy (one allele) of a certain trait. For example, if a female has one X chromosome with mutation (e. g. disease carrying) and one normal X chromosome, she is carrier for the disease. But, on the other hand if a male has one X chromosome with mutation he will develop that disease.
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