All cats are genetically tabbies thanks to the agouti gene. In many cats and cat breeds, the agouti gene is suppressed, giving them a solid color. When it comes through, however, the agouti gene ...

The torbie, and its genetic remixing — driven by X-chromosome inactivation, tabby genes, and the agouti gene — is both the cat's meow and an artful coat of unpredictable pattern. If you ...