In rabbits, an allelic series helps to determine coat color: C (full color), cch
ID: 12906 • Letter: I
Question
In rabbits, an allelic series helps to determine coat color: C (full color), cch (chinchilla; gray color), ch (Himalayan; white with black extremities), and c (albino; all white). The C allele is dominant to all others, cch is dominant to ch and c, ch is dominant to c, and c is recessive to all the other alleles. This dominance hierarchy can be summarized as C>cch>ch>c. Give the genotypic and phenotypic ratios expected if rabbits with the following genotypes are crossed:
a. Ccch x Cch 3:1 full color to Chinchilla
b. Cch x chc 1:1 full color to Himalayan
c. Cch x cc 1:1 full color to Himalayan
d. cchch x chc 1:1 Chinchilla to Himalayan
e. Cc x chc 2:1:1 full color to Chinchilla to albino
SHOW ALL WORK!!!
Explanation / Answer
FULL color----------- CC , C cch,, C ch , C c
Chinchilla------------------ cch ch , cch cch , cchC
Himalayan---------------- ch c, ch ch
Albino----------------cc
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