Morphs happen in the wild and in captivity.
Just random genes not able to do their jobs.
I will add this...anyone who thinks that an exporter/breeder doesn't have some breeding stock of crazy mutants is crazy themself.
Look at one of the "rarest" blood python morphs the T-. They are suppose to be super rare, but it sure does seem wild that they keep popping up over and over...not to mention that an importer/farm breeder had 3 "WC" adults for sale last year....
Now if they are so rare, how in the world could someone find one or two, let alone three?
hmmmmmmmmmmm......