Alright you have an amber cat (Norwegian Forest cat of course) which you breed to a ginger she-cat. What could would the resulting kittens be? I found a cat coat calculator but it doesn't has the possible results, so I hope you may be able to help me.
Genetically, an amber cat is black (or a black-based brown tabby, etc.) except for one gene (the amber gene). Amber is recessive, so unless the she-cat has Norwegian Forest cat ancestry, the kits will be the same possibilities you’d get with a ginger she-cat and a black tom. The only difference is that the kits will all carry the amber gene and can pass it on to their kits, so down the line two non-amber cats could give birth to an amber kit instead of a black one.
If the ginger she-cat did happen to carry an amber gene, the kits would have a 50% chance of inheriting it and carrying the genetic potential for amber. That said, all the toms will be ginger so it wouldn’t matter for them. The she-cats, all torties, would have a 50% chance of being amber torties instead of normal tortoiseshells.Â
~ E
