What Happens When Alleles Have Incomplete Dominance?
What Happens When Alleles Have Incomplete Dominance? Incomplete dominance occurs when two heterozygous alleles are expressed together in the phenotype of an organism. The distinct phenotypes produced by each allele are blended together into a third phenotype. How can incomplete dominance affect phenotypes? Codominance and incomplete dominance yield unique phenotypes for heterozygous offspring (Aa). Incomplete