Inheritance of ABO blood type in humans is an example of
A) pleiotropy.
B) epistasis.
C) incomplete dominance.
D) a gene that is coded by more than two alleles.

Question

Quizplus · Accepted Answer

ABO blood type inheritance is determined by a gene that is coded by three alleles, A, B, and O. The A and B alleles are codominant, while the O allele is recessive. The combination of these alleles determines an individual's blood type (A, B, AB, or O).

Inheritance of ABO Blood Type in Humans Is an Example