Nine thousand years ago, humans began domesticating cats. Nine hundred years ago, before the advent of intentional cat breeding, a genetic mutation gave rise to the first orange cat. Days ago, ...

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Nine thousand years ago, humans began domesticating cats. Nine hundred years ago, before the advent of intentional cat breeding, a genetic mutation gave rise to the first orange cat. Stanford ...

Unlike any other “ginger” mammals, orange cats’ coloration owes to a sex-linked gene, which is why 80% of orange felines are fellas.

Unlike any other “ginger” mammals, orange cats’ coloration owes to a sex-linked gene, which is why 80% of orange felines are fellas.

Why cats are orange (and tortoiseshell and calico) Stanford Medicine researchers discover mechanisms of a sex-linked genetic mutation that give rise to ginger felines ...

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Male cats with orange-colored parents only get one copy of the orange mutation and thus end up with entirely orange fur. Female cats, however, have two X chromosomes.