Question

The blood groups with both homozygous and heterozygous genotypes are

• A. A & AB
• B. B & AB
• C. A & B
• D. AB & O

Answer 1

The correct option is C

A & B

Blood group A has two genotypes $I^A{I}^{A}and{I}^A{I}^O$ . Blood group B has two genotypes $I^B{I}^{B}and{I}^B{I}^O$