A woman is married for the second time. Her first husband has blood type A and her child by that marriage has type O. Her new husband has type B and when they have a child, its blood AB.

A) What is the woman's Genotype?
B) Phenotype?

Question

A woman is married for the second time. Her first husband has blood type A and her child by that marriage has type O. Her new husband has type B and when they have a child, its blood AB.

A) What is the woman's Genotype?
B) Phenotype?

anonymous · Answer

It must be   Blood group  A with genotype AO as from her first husband as the child has blood  group 0 that can only be possible when both the parents have genotype AO also from her second husband the child born is with blood group AB it can only be possible if mother has the genotype AO