Final answer:
The mating of a normal color rabbit (CC) with a grey rabbit (cg cg) under Mendelian genetics would produce offspring with the genotype Ccg, all of which would exhibit the normal coat color since the grey allele is recessive to the normal coat color allele.
Step-by-step explanation:
In the context of rabbit coat color genetics, a cross between a normal color rabbit (CC) and a grey rabbit (cg cg) would result in all offspring having the genotype Ccg. These offspring would exhibit normal coat color, because the grey allele (cg) is recessive to the normal coat color allele (C). This follows Mendelian genetics where a dominant allele masks the expression of a recessive allele.
To predict the outcome of the matings under the hypothesis that the grey allele is recessive to normal coat color and dominant to chinchilla, we also consider the mentioned multiple allele system and the dominance hierarchy provided. If the wild-type allele (C) is dominant over grey (cg), all offspring would express the wild-type phenotype, since the grey allele is dominant over chinchilla but recessive to the wild-type allele.
It is also important to note that in cases of multiple alleles, such as the rabbit coat color, there are more than two possible alleles at a particular gene locus, which can lead to various phenotypic outcomes depending on the combination of alleles an organism inherits.