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

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) 2/3;(b) no
D) (a) 1/2;(b) no
E) (a) zero;(b) no