Question

If mother has ‘O’ blood group, child also has ‘O’ group. What can be the blood group of Father?

• A. O
• B. A
• C. B
• D. all are possible

Answer 1

The correct option is D all are possible

If mother has ‘O’ blood group, then the child will have O blood grooup only when father is heterozygous A or B or father has O blood group.