In rabbits, two genes control fur pigmentation. At the color locus, the Grey all

Question

In rabbits, two genes control fur pigmentation. At the color locus, the Grey allele is dominant to the tan allele and at the Albino locus, pigmented fur is dominant to pigment-less (albino) fur. Rabbits homozygous recessive at the albino locus have albino fur no matter what the genotype is at the color locus. The Grey and Albino loci are both on chromosome two-20 map units apart A homozygous Tan rabbit was mated with a homozygous Albino rabbit. All the F1 rabbits had grey fur. What phenotypic ratio would you expect in the F2 generation? (Remember the genes are linked)

Explanation / Answer

The albino allele c is recessive to all the other coat color alleles, it will reveal what the exact genotype of the other parent is. If the chinchilla rabbit is true-breeding, then all of the offspring would be chinchilla; if there are any other alleles present, such as the Himalayan or albino allele, then there will be other-colored offspring in the phenotypic ratio of 1 chinchilla : 1 Himalayan/albino.

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