The Cat Fanciers Association also notes that orange male cats must come from mothers with orange, calico or tortoiseshell coloring. It’s rare to see a female orange-all-over cat (for this to happen, she would need an orange or red father and a mother with some orange coloring). Genetics are also the reason a majority of cats with orange-only coats are male. If they get an o version, they’ll be a different color. If they get an O version, they’re orange. Male cats on the other hand, are rarely calico or tortoiseshell because they only have that one X chromosome. Green Eyed Cats Image Credit: MLight, Shutterstock. Tonkinese cats have an unusual aqua-blue eye color that isn’t seen in any other breed. Balinese, Persian, Maine Coon, and Devon Rex. Last Updated On: Septem/ By Anthony Duggan Have you heard the phrase calico tabby, caliby, or torbie and wondered what people are referring to Well, calico tabby cats are a specific type of cat with specific characteristics. Basepaws, maker of cat DNA tests that tell you about your cat’s genetic markers, says female felines are more likely to be calico or tortoiseshell because there are more gene combinations available to them through their X chromosomes (O/O, o/o, O/o, o/O). While some eye colors are linked to specific breeds, others can be found in many purebred and mixed-breed cats. Female cats have two X chromosomes, which means two chances to inherit orange hues. The dominant O gene will produce orange coloration the recessive o gene will not. Both pedigreed cats and mixed-breed cats have varying incidences of health problems that may be genetic in nature. Basically, the gene responsible for orange and red coat color is found on the X chromosome and comes in two versions: dominant (O) and recessive (o). We’ll make this quick because genetics are complicated.
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