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Self Assessment Question # 4
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© 2002 - 2010
(True story.)
A veterinarian was presented with a calico cat. You may recall that the calico pattern of these cats is caused by the mosaic X inactivation patterns for genes involved in coat color. To the vet's surprise, the cat was a "tom" (a male cat)!
Is that normal?
How could that happen?
Hint - the vet solved the mystery by checking the cat's karyotype. What do you think was discovered about this cat's chromosomes?
Go to the ANSWER