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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?

2 Answers

7 votes

Final answer:

The genotypes of the cats are as follows: 1 yellow male: XY, 2 black males: XY, 2 yellow females: XXY, 3 calico females: XX.

Step-by-step explanation:

In cats, coat color is carried on the X chromosome. A calico cat has patches of black and yellow, and the color is determined by alleles on the X chromosome. The genotypes for the cats are as follows:

  • 1 yellow male: XY
  • 2 black males: XY
  • 2 yellow females: XXY
  • 3 calico females: XX

User Nawlrus
by
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3 votes
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

User Satbir
by
8.0k points
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