Codominance - A form of inheritance in which both alleles
Are equally shown.
Blood typing is a great example.
AB blood is the codominant relationship between the A protein and B
Protein both expressing themselves completely.
AO (type O allele means there is no protein), A is dominant and you
See type A phenotype.
BO is the same except you see the B phenotype. Type O is recessive.
Incomplete dominance - A form of inheritance in which the
Heterozygous alleles are both expressed,
Resulting in a combined phenotype.
The one example that most books
Give is seen in some flower colors.
A red and a white allele gives pink. If it were codominance, you
Would see the red and white colors.
Incomplete dominance is most commonly found in plants.