Question

What would be the possible genotypes of children regarding ABO blood group if their mother is with blood group O and father with blood group AB?
[0.7 mark]

• A. $I^A{I}^B\text{and}ii$
• B. $I^{A}iand{I}^{B}i$
• C. $I^A{I}^B,I^{A}iand{I}^{B}i$
• D. $I^{A}i,I^{B}iandii$

Answer 1

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

Genotypes of mother and father are ii and $I^A{I}^B$ respectively. Possible blood groups in children can be shown as follows:



Therefore, the possible genotypes in children regarding blood group is $I^{A}iand{I}^{B}i$ only.