Which idea is depicted by a cross in which the $F_1$ generation resembles both the parents?

Codominance is shown by the gene controlling:

What is the phenomenon called where factors produce independent effects in their heterozygous condition?

Alleles which show independent effect are called

Which principle is demonstrated by a cross in which the $F_1$ generation resembles both parents?

$A$ roan bull is crossed with three cows. Cow $A$ has the same genotype as the roan bull,cow $B$ is red,and cow $C$ is white. What should be the proportion of roan offspring in each group of cows?