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 Cc^h × cc.

Question

Quizplus · Accepted Answer

The cross Cc^h × cc results in offspring with genotypes Cc and c^hc. The Cc genotype will express the full color phenotype, and the c^hc genotype will express the Himalayan phenotype. Thus, the phenotypic ratio is 1 full color : 1 Himalayan.

In Rabbits, an Allelic Series Helps to Determine Coat Color