Question

A calico cat has a litter of 8 kittens: 1 yellow male, 2 black males, 2 yellow females, and 3 calico females. What are the genotypes for all the cats?

Answer 1

The answer is mother cat is calico (XBXR), yellow male is XRY, black males are XBY, yellow females are XRXR, and calico females are XBXR

Let B be black, R yellow and BR calico. For calico to be expressed, alleles for both fur color must be present (it si codominant trait)
Female cats can be:
XBXB - black
XRXR - yellow
XBXR - calico

Male cats can be:
XBY - black
XRY - yellow

So, mother cat is calico (XBXR), yellow male is XRY, black males are XBY, yellow females are XRXR, and calico females are XBXR