JAMB Biology 2025 Objective — Question 10
Question 10 of 40 from the Joint Admissions and Matriculation Board (JAMB) Biology 2025 Objective paper, with the correct answer and a full explanation.
Advertisement
A man with blood group AB marries a woman with blood group O. Which blood groups are possible among their children?
- A. A, B, AB and O
- B. A, B and O
- C. A and BCorrect
- D. AB and O
Explanation
The man with blood group AB has the genotype AB while the woman with blood group O has the genotype OO. Their offspring can inherit either an A or a B allele from the father and the O allele from the mother. Thus, a child can either have blood group A (genotype AO) or blood group B (genotype BO).
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.