In rabbits, full coat color (c) is the dominant trait. A second allele, chinchilla (cch) is recessive to full coat color. Himalayan coat color (ch) is recessive to chinchilla and full coat colors and albino (c) is recessive to all coat colors. If two chinchilla rabbits mate, what coat color is not possible in their offspring?
A) Full coat color
B) Chinchilla coat color
C) Himalayan coat color
D) Albino coat color
E) All coat colors are possible

Question

Quizplus · Accepted Answer

If two chinchilla rabbits mate (both carrying the recessive cch allele), their offspring can inherit one of two possible alleles from each parent: cch or c. 
- If they inherit cch from both parents, they will have chinchilla coat color. 
- If they inherit c from both parents, they will have albino coat color. 
- If they inherit c from one parent and cch from the other, they will have chinchilla coat color.

Therefore, the only coat color that is not possible in the offspring of two chinchilla rabbits is full coat color (which requires two copies of the dominant c allele).

In Rabbits, Full Coat Color (C) Is the Dominant Trait