Free tool — no account needed
Carpet python morph calculator
Morelia spilota — Carpet python genetics centre on Jaguar (an incomplete dominant whose super form is non-viable) plus recessives like albino, granite and caramel. Locality lines — jungle, coastal, IJ — drive most of the look.
Sire ♂
1 gene
Jaguar
Incomplete dominant
Lethal: two copies are non-viable.
Dam ♀
1 gene
Jaguar
Incomplete dominant
Lethal: two copies are non-viable.
Clutch odds per egg
2 possible hatchlings · updates liveLeft out of the percentages because they are polygenic or line-bred — log them on the animal instead: Jungle line yellow, Coastal line size, Irian Jaya line, Reduced pattern.
Learn before you pair
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.