Well, I think what you are looking for is this. What we call morphs are what in science we call genetic mutations. Some times in nature things mutate for no reason. This is how we get really tall people, really short people, black people, white people, and michael jackson. Sometimes these mutations can be "created" in labs, but thats a whole other topic, and is not common. So where does a come from? Some are combonations of other morphs, but most are natural mutations that someone found in the wild. Some bush guy is roaming around looking for snakes and he finds this great bright yellow ball python... he knows this is worth a few more dollars so he sells is as something special, it works its way through the chain and ends up in someones collection who is willing to try to "prove" it to be a genetic trait.
Now the breeder must get this new import healthy and breeding, the offspring is usually bred back to the wild parent, or the siblings. This is when you will see if its genetic or not. Not all mutations are genetic. Some really cool snakes can be non-genetic. One good example of a non-proven morph is the paradox albino. So once it is proven genetic, thats when you can chalk it up as a new morph. This is how 99% of the base morphs are found and reproduced. This is why SOMETIMES you will see some weak genetic lines of snakes, as inbreeding will bring out negative traits much quicker than not.
A few morphs are created by offspring of weird genetic parents. The lesser Platinum is an example of this. RDR has the orig Platinum (platty daddy). It was imported by RDR and he has produced lesser Platinums with him, but has yet to figure out how to produce a Platinum (thats why they call them the LESSER Platinum).
I believe cinny pastels and yellow pastels come from imported stock, now if someone has the original pastels back in africa and importing a select few every year, we may never know. It does seem like a good number of pastels get imported each year, but their could be a good number of wild pastels too! The same with piebalds, albinos, etc.
Is that what you where looking for???
Ben
American Tropics