Recessive ball python gene
Ultramel Ball Python: Genetics and Pairing Odds
Ultramel is a recessive gene. A ball python needs two copies to look Ultramel; with one copy it looks normal and is called het Ultramel. Pair two hets and about a quarter of the babies are visual Ultramel, while the normal-looking siblings are each 66% likely to be het. Breed a visual to a normal and every baby is het, which is how most Ultramel projects start.
What Ultramel pairings produce
| Pairing | Babies, per egg |
|---|---|
| Ultramel × Normal | 100% Normal het Ultramel |
| Het Ultramel × Het Ultramel | 75% Normal 66% het Ultramel25% Ultramel |
| Ultramel × Het Ultramel | 50% Normal het Ultramel50% Ultramel |
| Ultramel × Ultramel | 100% Ultramel |
| Het Ultramel × Normal | 100% Normal 50% het Ultramel |
Try Ultramel pairings yourself
Put any two animals into the ball python morph calculator for the full odds, hets and supers included. Or breed Ultramel ball pythons in Lock and Lay, a free ball python game where every clutch follows these same odds and the babies sell on a live market.
Other recessive genes
PuzzleCrypticEnhancerDesert GhostTri-StripeLavender AlbinoGenetic BandedMonarchPiebaldCandySaharaBlack Axanthic