Question

what is codominance? a type of inheritance in which the trait is controlled by three or more pairs of alleles. a type of inheritance in which the dominant allele is not completely expressed in the heterozygous genotype. a type of inheritance in which all the alleles of heterozygous genotype are fully expressed.

Explanation:

Codominance is a genetic inheritance pattern where in a heterozygous genotype, both alleles are fully expressed and visible in the phenotype. For example, in blood - type AB, both A and B alleles are expressed. The first option describes polygenic inheritance. The second option describes incomplete dominance.

Answer:

A type of inheritance in which all the alleles of heterozygous genotype are fully expressed.