Actually a domesticated dog can survive being re-introduced to the wild. They will scavenge, breed, re-multiply and survive establishing new packs. A prime example of this are feral cats and feral hogs. Once considered domesticated but are re-evolutionized back to wild traits and habits!
I'm sure if you took a clutch of unhatched Ball Python eggs and replaced them in their correct habitat, a significant portion of the genetically dominant, i.e. "normals" would thrive. Where as, most of the beautiful morphs would be picked off by other predators due to their lack of physical camouflage. Definitely would be an interesting case study. I can say this from 3 years spent in Africa, 95% of all morphs found on the market for sale, are not found in the wild due to "survival of the fittest"!