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Ball python morph calculator
Python regius — The deepest morph market in the hobby. Most base genes are incomplete dominant, so supers stack fast, while the high-value project genes (clown, piebald, desert ghost) are recessive and need two carriers.
Sire ♂
2 genes
Pastel
Incomplete dominant
Clown
Recessive
Dam ♀
1 gene
Clown
Recessive
Clutch odds per egg
4 possible hatchlings · updates liveLeft out of the percentages because they are polygenic or line-bred — log them on the animal instead: Reduced pattern, Bumblebee flame intensity, Blushing.
Learn before you pair
Morph breedingBall python morphs: a keeper's guideWhat ball python morphs actually are, how the gene categories combine, and an honest answer to 'how many morphs are there' — before you run a pairing.Morph breedingHow to read morph calculator resultsProbability is not a promise. What per-egg odds, het percentages and clutch statistics actually tell you — whichever species you are pairing.
Questions keepers ask
- Are predicted morph percentages guaranteed in a clutch?
- No. Each percentage is a probability for an individual egg. A small clutch can differ substantially from the expected ratio.
- Can a photograph prove a recessive het?
- No. Record documented parentage, breeding evidence or appropriate genetic testing separately from visual appearance. A possible het remains a probability, not a proven carrier.
- Can line-bred traits be predicted with a Punnett square?
- Not reliably. Line-bred and polygenic traits involve selection and multiple influences; keep their descriptions in animal records rather than treating them as simple single-gene odds.