What are the possible phenotypes of the children if the mother has Type O blood and the father has type AB blood? (Use the Punnett square to verify your answer.)

A) AB only
B) A, B
C) A, AB
D) A, B, AB
E) A, B, O

Phenotypes

The observable physical or biochemical characteristics of an organism, determined by both genetic makeup and environmental influences.

Type O Blood

A blood type characterized by the absence of A and B antigens on the surface of red blood cells, making it universally compatible as a donor.

Type AB Blood

A blood type in the ABO blood group system that has both A and B antigens on the surface of the red blood cells and no antibodies in the plasma against either antigen.