Codominance

Definition

Codominance occurs when two different alleles (variations of a gene) are both fully expressed in a heterozygous individual, resulting in a phenotype that showcases both traits simultaneously without blending. In this scenario, neither allele masks the other.

Related terms

Allele:

An allele is one of two or more versions of a gene that determine variations in the expression of a genetic trait.

Heterozygous:

Heterozygous refers to having two different alleles for a single trait.

Phenotype:

Phenotype is the set of observable characteristics or traits of an organism resulting from the interaction of its genotype with the environment