Explanation:
In codominance, neither allele is dominant or recessive and both get expressed. In this, the contributions of both alleles are visible in the phenotype. Blood types are excellent examples of codominance. A person’s blood type can be A, B,AB or O. If a person has type A protein they have type A blood, if a person has type B protein, they have type B blood , and if a person has type O blood neither protein is present, if a person is type AB then they have both type A and type B proteins present in their blood.