One trait that illustrates the principle of codominance is

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AB blood type is an example of codominance because both alleles are expressed equally, resulting in a phenotype that displays features of both alleles. In this case, individuals with AB blood type have both A and B antigens on their red blood cells, due to the codominant expression of both the A and B alleles. This is in contrast to incomplete dominance, where the heterozygote shows an intermediate phenotype between the two homozygotes, or complete dominance, where one allele completely masks the expression of the other.

One Trait That Illustrates the Principle of Codominance Is