When one of the parents has 'A' blood group and the other parent has 'O' blood group, then their child can have _____ blood group. |
Only 'A' Only 'O' Both 'A' and 'O' Either 'A' or 'O' |
Either 'A' or 'O' |
The correct answer is Option (4) → Either 'A' or 'O' |