Question

18. A man with type AB marries a woman with type AB. probability that any particular child will be type 0? What is the

Answer 1

0% probability of any child with blood group O .

When a man with blood group AB marries a woman with the same blood group that is AB , the blood group of the child will be A or B or AB. There will be no child with blood group O. As both the parents have AB blood group and they can only pass either A allele or B allele , so there progeny will never have the blood group O type .

l^{​​​​​​A}​​​​​l^​B (genotype of the man) × l​​​​​^{​​​​​​A​​}​ l^{​​​ B}(genotype of the woman)

Genotypes of the children:

I^{​​​​​​A} I^{​​​​​​A} (Blood group A type) , l^{​​​​​​A} l^{​​​​​​B} ( AB type) , l ^A l^{​​​​​​B} , l ^B I ^B ( Blood group B type).