Question

If a man with blood group A (homozygous) marries a woman with blood group B (homozygous), the following blood groups are not expected in their children.

• A. A and AB only
• B. A, B, and O
• C. B and AB only
• D. A and B only

Hint:

A homozygous A parent (AA) and a homozygous B parent (BB) will always produce AB children.

Answer 1

The Correct Option is B

Step 1: Understanding Blood Group Inheritance

- Blood group A (homozygous) = AA
- Blood group B (homozygous) = BB
- Their offspring inherit one allele from each parent → AB.
Step 2: Possible Blood Groups in Children

- Offspring will have the AB blood group.
- A, B, and O blood groups are not possible.
Step 3: Conclusion

Since A, B, and O blood groups are not expected, the correct answer is Option (2).