https://blog.spacehey.comForum Topic created by Alexahttps://forum.spacehey.com/reply?id=866472https://forum.spacehey.com/reply?id=866472One I like is that tortoiseshell/calico cats are hardly ever male due to how the orange and non-orange pigment inheritance works!  It goes something like this - on the x chromosome(s), there's a little switch saying whether to be orange or not to be orange. Female kittens get two, one from mom, and one from dad. If these are not the same (aka, if one says "be orange!" and the other says "no, no!")...Mon, 23 Feb 2026 17:41:03 +0000