Incomplete Dominace is where an allele is neither dominat or recessive, an exapmle is a Four o' Clock plant. It is Honozygous red (RR) and homozygous White (WW) so when they porduce offspring their offspring is going to be pink because neither allele is dominat.
Codominace is when a allele is both dominat. An example would be a chicken. In a chicken the allele for black fethers is codominat with eh allele for white feathers. So when they produce offspring their offspring would be Black and White.
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.