In humans, ABO blood types refer to glyocproteins in the membranes of red blood cells. There are three alleles for this autosomal gene: IA, IB, and i. The IA allele codes for the A glycoprotein, the IB allele codes for the B glycoprotein, and the i allele doesn't code for any membrane glycoprotein. IA and IB are codominant, and i is recessive to both IA and IB. People with A type blood have the genotypes IAIA or IAi, people with type B blood are IBIB or IBi, people with type AB blood are IAIB, and people with O type blood are ii. If a woman with type AB blood marries a man with type O blood, which of the following blood types could their children possibly have?

Question

Quizplus · Accepted Answer

Since the woman has AB blood (genotype IAIB) and the man has O blood (genotype ii), their children can only inherit an IA allele from the mother and an i allele from the father or an IB allele from the mother and an i allele from the father, resulting in genotypes IAi (type A blood) or IBi (type B blood).

In Humans, ABO Blood Types Refer to Glyocproteins in the Membranes