im not entirly sure about breeding myself, only what I know from genetics lessons in biology and dominant and recessive (and even still mother nature throws a curve ball from time to time...especially with cats...i.e. bald cats and curly cats...complete surprize!)

But 4 months seems AWFULLY young to consider breeding...and I would think you'd want to do a LOT of research on it before you began.....God forbid something go wrong. And personally, I'd think twice about breeding cats, unless you have a purebred. There are so many homeless kitties out there looking for good homes. Also you have to be commited enough to deal with Sammy when she's in heat. Scary thing that!