Why Do X-Linked Conditions Appear More Frequently in Males Than

question 42

Multiple Choice

Why do X-linked conditions appear more frequently in males than in females?

• A)A male with a nonfunctioning allele on the X chromosome does not have another allele of that gene on the Y chromosome that could cover up the nonfunctioning one.
• B)Males have no X chromosomes.
• C)The Y chromosome carries many alleles that are recessive to alleles on the X chromosome.
• D)Males are more likely to inherit an extra chromosome than females.
• E)Females have no X chromosomes.

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