Glucose-6-Phosphate Dehydrogenase Deficiency (G6PD)is Inherited as a Recessive Allele of an X-Linked

question 55

Multiple Choice

Glucose-6-phosphate dehydrogenase deficiency (G6PD) is inherited as a recessive allele of an X-linked gene in humans.A woman whose father suffered from G6PD marries a normal man.
(a) What proportion of their sons is expected to be G6PD?
(b) If the husband was not normal but was G6PD deficient,would you change your answer in part (a) ?

• A)(a)100%; (b)no
• B)(a)1/2; (b)yes
• C)(a)1/2; (b)no
• D)(a)zero; (b)no
• E)(a)100%; (b)yes

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