Question

Human blood groups are governed by three alleles, IA, IB, and i. IA and IB are codominant and i is recessive to both. A man who has type B blood and a woman who has type A blood could have children of which of the following phenotypes?

A. type A
B. type B
C. type AB
D. type O
E. all of the above

Answer 1

E

Step-by-step explanation:

Where IA is the allele for A, IB for B and i for O,

Assuming that the genotype of the man is IB i and that of the female is IA i,

IA i × IB i,

IA IB- blood type AB

IA i- blood type A

IB i- blood type B

ii- blood type O