AP BIOLOGY

Detailed explanation-1: -Codominance. Codominance refers to the dominance in which the two alleles or traits of the genotypes (of both homozygotes) are expressed together in offspring (phenotype). There is neither a dominant nor recessive allele in cross-breeding.

Detailed explanation-2: -Incomplete dominance occurs when neither of two alleles is fully dominant nor recessive towards each other. The alleles are both expressed and the phenotype, or physical trait, is a mixture of the two alleles. In less technical terms, this means that the two possible traits are blended together.

Detailed explanation-3: -Incomplete dominance occurs when neither trait is truly dominant over the other. This means that both traits can be expressed in the same regions, resulting a blending of two phenotypes.

Detailed explanation-4: -Codominance and incomplete dominance yield unique phenotypes for heterozygous offspring (Aa). Incomplete dominance results in heterozygotes with intermediate phenotypes, as in the case of snapdragons when parents with red flowers and white flowers are crossed resulting in heterozygous offspring with pink flowers.