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 of rabbits with the cross c^chc^h × c^hc.

Question

Quizplus · Accepted Answer

The cross c^chc^h × c^hc results in offspring with genotypes c^chc^h, c^chc, c^hc^h, and c^hc. The phenotypes are 1 chinchilla (c^chc^h), 1 chinchilla (c^chc), 1 Himalayan (c^hc^h), and 1 Himalayan (c^hc), resulting in a 1 chinchilla : 1 Himalayan ratio.

In Rabbits, an Allelic Series Helps to Determine Coat Color