Did you know? Male calico cats are very rare!
Why?
Calico cats, unlike say the Siamese, are not a breed but rather a genetic disorder of sorts. In the cat world, fur color is a gender-specific trait related to chromosomes. Female cats possess dual sets of X chromosomes, which means they are capable of showing combinations of orange and black -- the colors that are associated with the aforementioned chromosome. Males usually only have one set of the chromosome, so in the rare instance when a tom cat has two of them, he too can enjoy a beautiful calico coat.
C (Possesive)
F (Possesive)
m (Recessive)
Recessive are genes that are carried, but don't show through. (The recessive gene would be the male gene (m).)
Possesive are genes that are carried, and are shown on the physical body.
If both Male and Female have the Calico Gene...
FC FC
mc FmCc FmCc
Fc FFCc FFCc
There is a 0.3% chance to get a male, AND calico male.
Edits;
S -- Tooth
C -- Pelt
C -- Tail
UC -- Pupil