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Western hognose morph calculator
Heterodon nasicus — Hognose genetics mix recessives (albino, axanthic, toffeebelly) with a set of incomplete dominant pattern genes (superconda, arctic, toxic) whose supers look dramatically different.
Sire ♂
1 gene
Conda
Incomplete dominant
Dam ♀
1 gene
Conda
Incomplete dominant
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: Red / pink colour lines, Extreme 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.