I first started to wonder about the genetics of cat coat colors and patterns around the time I adopted Calpurnia. My previous cats had been far more standard cats: tabbies, tuxedo cats, a dilute tortoiseshell. Calla’s coat is not only is a more exotic one, but has several combinations together. I had to find out what was possible or not possible to see on a cat.
It turned out to be relatively simple. Nature takes a few simple characteristics and combines them to produce the final coat, instead of having them preset and selected. Thus a small amount of genetic programming goes a long way.