"Even if someone were to nab a cell from a developing embryo before the X-linked inactivation happened, the new cloned kitten would also randomly inactivate its

"Even if someone were to nab a cell from a developing embryo before the X-linked inactivation happened, the new cloned kitten would also randomly inactivate its X chromosomes, leaving two cloned siblings that don't have the exact same color pattern." The different colour patterns part is true for any cloned cat's markings, not just clones of a tortoiseshell. The cloned cat "Cc" who hit the news a decade ago was a tabby-and-white clone of a calico cat; calico patterns also result from having the black coat gene on one X chromosome and the ginger coat gene on the other, which is why calico and tortoiseshell cats are almost all female, and why ginger cats are three times more likely to be male than female. Trisomy does occur in cats but very rarely.