AP BIOLOGY

Detailed explanation-1: -Codominance. As opposed to partial dominance, codominance occurs when the phenotypes of both parents are simultaneously expressed in the same offspring organism.

Detailed explanation-2: -Codominance occurs when both alleles show dominance, as in the case of the AB blood type (IA IB) in humans.

Detailed explanation-3: -When you have two copies of the alleles that are both dominant, this is called codominance . For example, if the dominant trait is red for flowers and another dominant trait is white, then the flower will have both red and white as the dominant traits are expressed equally.

Detailed explanation-4: -You are right that codominance happens when two traits are both visible at the same time. The classic example that we’ll go over in more detail is the AB blood type. People with this blood type have A and B proteins at the same time. There are other examples as well, including blood cell shape in sickle cell disease.

Detailed explanation-5: -In complete dominance, only one allele in the genotype is seen in the phenotype. In codominance, both alleles in the genotype are seen in the phenotype. In incomplete dominance, a mixture of the alleles in the genotype is seen in the phenotype.