What’s the difference between alleles that are codominant and those that are incompletely dominant?

Codominant- when both are expressed like in flower red and white are codominant so they mixes to get a pinks flower.

Incomplete Dominants- is when a where cow and brown cow mix the offspring are brown with white patches

answer; /// i believe that the correct answer is (50%);

the backbone of the dna and rna compound is sugar phosphate.