Definition, Meaning & Synonyms

codominant

Adjective

/ˈkoʊ.doʊˌmɪ.nənt/

Definition

In genetics, codominant refers to a relationship between two versions of a gene where both versions can be expressed equally in the phenotype of an organism.

Examples

In blood type inheritance, the A and B alleles are codominant, leading to AB blood type in individuals with both alleles.
Cows can exhibit codominant traits, such as red and white patches when they carry alleles for both colors.

Meaning

Codominance occurs when both alleles in a heterozygous organism contribute to the organism’s characteristics, resulting in a phenotype that displays both traits distinctly rather than blending them.