Next, I've seen it opined here on BYC (and maybe elsewhere?Having a senior moment...) that peach results (or resulted from) a cross of purple and cameo. But I don't know if that has been verified, or is just a thought????
Basically, it has been proven. If you breed a peach male to a cameo hen, you end up with peach hens and cameo males (these males are then split to peach). The same would apply if you used a purple hen, but would end up with purple males. If you had a purple (or cameo) male bred to a peach hen, you should end up with similar results -purple (or cameo) males split peach and hens the colour of the father.
So to what extent, if any, are purple, peach and cameo alleles, or carried in related places on the sex chromosomes? What happens when peaches, purples and cameos are interbred? If peach really is a result of purple crossed with cameo, can it be uncrossed? Can a peach throw purple and cameo chicks, or only peach? Was peach a "one time" mutation, or is it something that requires having a purple gene plus a cameo gene? Are any of them recessive to another? Alleles? Can a male be peach split purple or purple split peach? Can a male have two purple genes and two peach genes? And two cameo genes?
My answer to your previous paragraph contains some of the answers you asked in this one. I believe in theory, a peach could throw a purple or cameo (likely hens, unless bred to a purple or cameo). I've not heard of it yet, but that doesn't mean it hasn't. From all the origin stories I've heard, peach occurred twice at opposite ends of the US, so that being said, it could very well occur again. My question is how many times will we have to breed violetta to purple, peach or cameo to get another combo? When I finally get some violetta, that will be one of my breeding goals, but it will be purely based on luck!