Kodominance
Kodominance (more commonly spelled codominance) is a pattern of genetic inheritance in which two different alleles of a gene are both fully expressed in a heterozygote, producing a phenotype that shows distinct contributions from each allele rather than blending them. In codominance neither allele is recessive; both phenotypic effects are visible simultaneously.
A classic example is the human ABO blood group system: the IA and IB alleles are codominant,
Codominance differs from incomplete dominance, in which heterozygotes show an intermediate or blended phenotype; in codominance
Understanding codominance is important for genetics, medicine, and breeding, as it affects phenotype prediction, blood transfusion