Question

*CONTENT QUALITY REQUIRED*

A woman is married for the second time. her first husband was ABO blood type (B) and her child by that marriage was type AB. her new husband is blood type A and their child is type O.

what is the woman's ABO genotype and blood type?

#AthenaAbott

Answer 1

Hi there!

• Blood type : Type A
• Genotype : AO

!! REASON !!

For the first child to be a type O he has to be homozygous for O which means the parents would have to carry an O.

For the second child to be AB and the father is B, the A had to come from the mother. This would make her AO, type A

[ Thank you! for asking the question. ]
Hope it helps!