Genetics question please provide an explanation so i can understand why that answer was choosen?

Question

When roan cattle are crossed, 25% of the offspring produced will have white coats, 50% will have roan coats, and 25% will have red coats. These results illustrate

a) s*x linkage

b)codominance

c)crossing-over

d)multiple allele inheritance

Answer 1

B. CODOMINANCE

This is a typical example of codominance resulting to the blending of colors. While I have noted in the question I answered earlier that incomplete dominance result in the mixing of color this case result in the blending of colors. Note that both alleles are dominant to the trait hence they are both manifested in the offspring.

Hope this helps...