Cat Color Genetics

NPR ran a short story yesterday about the genetics for cat coloration (see link below). A study published in Science found that cat colors vary as stripes, spots, and blotches and that these colors may influence resistance to disease. They implied that this might have implications for human disease resistance as well, but they didn’t say how.

Thanks to Ada Berman for telling me about this!

Now here is something of a weirder color–a chimera cat–with heterochromia (each eye a different color):

Chimera cat – Its own Fraternal Twin (

In a later post I’ll link to info about calico genetics specifically–others have done a decent job of explaining something rather complex.


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