Q.If the Child's blood group is 'O', the father's blood group is 'A' and the mother's blood group is 'B', the genotypes of the parents will be :
You're viewing a preview — the full solution, concept, methods & PYQ mapping are locked.
Start your 14-day free trial to unlock the full solution →An O-blood-group child needs an I^O allele from each parent, so the A-group father must be I^A I^O and the B-group mother must be I^B I^O.
The ABO blood group is controlled by multiple alleles I^A, I^B and I^O, where I^A and I^B are co-dominant to each other and both are dominant over I^O. A child with blood group O has the genotype I^O I^O, meaning it received one I^O allele from each parent. Since the father shows blood group A, his genotype must include at least one I^A allele, and to pass an I^O allele to the child he must be heterozygous, I^A I^O; similarly, the B-group mother must be heterozygous I^B I^O to be able to contribute an I^O allele …
Unlock everything free for 14 days
- Full step-by-step solutions
- Concept-first explanations
- Methods, shortcuts & mistakes
- PYQ mapping + timed mock tests
Full access for 14 days. No credit card required.