A man with group A blood marries a woman with group B blood. Their child has group O blood. What are the genotypes of these individuals?
Father = AO (or IAi)
Mother = BO (or IBi)
First Child = OO (or ii)
What other genotypes and in what frequencies, would you expect in offspring from this marriage?
Examine the Punnett square to determine the other genotypes possible.
The other genotypes for children are (according to Campbell's system): 1/4 IAIB, 1/4 IAi, 1/4 IBi