Question

If both the alleles of a heterozygote show expression, the phenomenon is called ___.

• A. Pleiotropy
• B. Polymorphism
• C. Codominance
• D. Incomplete dominance

Answer 1

The correct option is C

Codominance

The condition in which both the alleles of a heterozygote show individual phenotypic expression is called codominance. For instance, two alleles of the ABO blood groups- $I^{A}and{I}^B$ are codominant, in the AB phenotype.