Talk about polyallelism in the coat color of rabbits.

In rabbits, a series of four alleles controls coat color in the following way: C is dominant to all other alleles and causes full dark gray color. The Chinchilla phenotype is due to the cch allele, which is dominant to all alleles other than C. The ch allele, dominant only to c a (albino), results in the Himalayan coat color. The order of dominance is C>cch>ch>ca.