Orange cats are among the most recognizable felines in the world. From beloved internet celebrities to mischievous household ...
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Why cats are orange (and tortoiseshell and calico)
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, ...
Calico cats (left) and tortoiseshell cats (right) are the classic example of X chromosome inactivation, where either an orange color or a black color variant of a gene on the X chromosome is active in ...
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