In Rabbits, an Allelic Series Helps to Determine Coat Color

question 79

Multiple Choice

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 c^chc^h × c^hc.

• A)1 full color:1 chinchilla
• B)1 full color:1 Himalayan
• C)1 chinchilla:1 Himalayan
• D)3 full color:1 chinchilla
• E)2 full color:1 Himalayan:1 albino

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