![]() ![]() ![]() These rare creatures are almost always sterile. If you’re lucky enough to come across a male Calico cat, chances are you won’t be able to reproduce it. It’s estimated that 1 in 3000 Calico’s are male. It can happen when the cat is a Chimera (two different embryos merge in the mother’s womb), or even more infrequently when kitten skin cells spontaneously mutate. The occurrence of a male Calico happens when a male kitten winds up with two X chromosomes along with the Y ( an XXY pattern). Male Calico cats do exist across the globe, even though they are notably rare to come by. Males do exist… but they’re mostly sterile So if you’ve seen a Calico, chances are it was a girl. Two X chromosomes are required for the Calico pattern. Male cats have an X and a Y (or XY) chromosome combination and female cats have 2 X’s (or XX). Specifically the X and Y chromosomes and how they distinguish males from females. The key to this strange phenomenon lies in their genetic heritage, regardless of the breed. As the name implies, these are Calico kitties with tabby patches.Īnother interesting Calico fact is that most of these kitties are female cats.
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