In mice, there is a set of multiple alleles of a gene for coat color. Four of those alleles are as follows:
C = full color (wild type)
cch = chinchilla
cd = dilution
c = albino
Given that the gene locus is not sex-linked and that each allele is dominant to those lower in the list, give the phenotypic ratios expected from the following cross.
wild (heterozygous for dilution) × chinchilla (heterozygous for albino)
A) 1 chinchilla : 2 dilution : 1 albino
B) 2 full color : 1 chinchilla : 1 dilution
C) 1 full color : 1 chinchilla : 2 dilution : 1 albino
D) 1 full color : 1 chinchilla : 1 dilution : 1 albino
E) 2 full color : 2 chinchilla : 1 dilution
Answer: B
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