In the case of codominance, what is observed in the offspring?

In cases of codominance, both alleles contribute to the phenotype of the offspring without one overshadowing the other. This means that offspring express distinct characteristics of both alleles simultaneously. A classic example is seen in the ABO blood group system, where individuals with one allele for A blood type and one for B blood type will have AB blood type, displaying characteristics of both parent alleles rather than a blended trait. This clear expression highlights how codominance allows for both traits to be fully represented in the offspring, demonstrating their genetic diversity.