Two different alleles come together and produce both trait forms?

When two different alleles come together, they can exhibit a phenomenon known as codominance, where both traits are expressed simultaneously in the phenotype. For example, in a flower with one allele for red color and another for white color, the resulting flowers may display both colors, creating a patchy or striped appearance. This contrasts with incomplete dominance, where the traits blend together to form an intermediate phenotype. In both cases, the presence of both alleles contributes to the diversity of traits observed in the offspring.