In cows, the allele for red hair is HR and the allele for white hair is HW. In chickens, the allele for black feathers is FB and the allele for white feathers is FW. For the following
individuals, which show co-dominance, write the appropriate genotypes:
a. a red cow
b. a roan cow
c. a white bull
d. a white chicken
e. a black chicken
f. a speckled chicken