In rabbits, an allelic series helps to determine coat color: C (full color), c^ch (chinchilla; gray color), c^h (Himalayan; white with black extremities), and c (albino; all white).The C allele is dominant to all others, c^ch is dominant to c^h and c, c^h is dominant to c, and c is recessive to all the other alleles.This dominance hierarchy can be summarized as C c^ch c^h c.Indicate the phenotypic ratios expected in rabbits with the cross Cc^h × c^hc.

Question

In rabbits, an allelic series helps to determine coat color: C (full color), c^ch (chinchilla; gray color), c^h (Himalayan; white with black extremities), and c (albino; all white).The C allele is dominant to all others, c^ch is dominant to c^h and c, c^h is dominant to c, and c is recessive to all the other alleles.This dominance hierarchy can be summarized as C > c^ch> c^h> c.Indicate the phenotypic ratios expected in rabbits with the cross Cc^h × c^hc.

Quizplus · Accepted Answer

The cross Cc^h × c^hc will produce offspring with a 1:1 phenotypic ratio of full color (C allele is present) to Himalayan (c^h allele without the presence of C allele), as the C allele is dominant over the Himalayan allele, and the albino allele (c) does not affect the phenotype in the presence of either C or c^h alleles.

In Rabbits, an Allelic Series Helps to Determine Coat Color