Answer:
The major difference between codominance and incomplete dominance is that in codominance, both alleles are expressed in the heterozygote. In incomplete dominance, one allele is expressed more strongly than the other, but both alleles are still present.
In codominance, the phenotype of the heterozygote is a combination of the phenotypes of the homozygotes. For example, a person with blood type AB has both the A and B antigens on their red blood cells.
In incomplete dominance, the phenotype of the heterozygote is somewhere in between the phenotypes of the homozygotes. For example, a person with blood type AB has a darker skin color than a person with blood type A, but not as dark as a person with blood type B.
Step-by-step explanation: