Question

Three children in a family have blood types O, AB and B respectively. What are the genotypes of their parents?

• A. $I^B{I}^B$and $I^A{I}^A$
• B. $I^A{I}^B$ and ii
• C. $I^{A}i$ and $I^{B}i$
• D. $I^A{I}^A$ and $I^{B}i$

Answer 1

The correct option is C $I^{A}i$ and $I^{B}i$

Parents having genotype $I^{A}i$ and $I^{B}i$ have children of the following blood group type – O, AB, and B.