PATHOLOGY MCQ
GENETICS AND DISEASE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Why are males more likely to express sex-linked traits than females?
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they inherit the sex-linked trait from both parents
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females only need one recessive gene to express the trait
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females do not carry sex-linked traits
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males contain one X allele which they inherit from their mother
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Explanation:
Detailed explanation-1: -Information. X-linked recessive diseases most often occur in males. Males have only one X chromosome. A single recessive gene on that X chromosome will cause the disease.
Detailed explanation-2: -Genes on the sex chromosomes can be expressed differently between males and females because of the presence of either single or double copies of the gene and because of the phenomena of different meiotic effects, X inactivation, and genetic imprinting.
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