Question

What would be the blood group of offspring, if the blood group of mother is AB and blood group of father is O?

Hint:

Cross between AB and O parents gives 50% A group and 50% B group children.

Answer 1

Step 1: Parental genotypes.
Mother’s blood group = AB → genotype = \( I^A I^B \)
Father’s blood group = O → genotype = \( i i \)
Step 2: Cross.
\[ I^A I^B \times ii \quad \Rightarrow \quad \text{Possible offspring: } I^A i, \; I^B i \] Step 3: Blood groups of offspring.
- \( I^A i \) → Blood group A
- \( I^B i \) → Blood group B
Step 4: Conclusion.
The offspring will have either blood group A or B, but not AB or O.