explain why a father with blood group AB cannot donate for a child with blood group O when he marries a woman with blood group O

Question

Step2247 [10]

4 years ago

11

explain why a father with blood group AB cannot donate for a child with blood group O when he marries a woman with blood group O

Biology

1 answer:

denis-greek [22] · Answer 1 · 2022-01-20T19:28:11+03:00

The odds are astronomical for a father with AB(IV) to have an O(I) child. The only possible way for this phenomenon to occur is if there was a nondisjunction in the ovogenesis for the 9th chromosome and the father also had a nondisjunction for the same chromosome(A sperm cell with no 9th chromosome fertilized an ovum with two 9 chromosomes).

A person with AB cannot donate to a person with O because the receiver has antibodies(alpha and beta) that bind to the antigens on the AB blood cells, causing death.