Pick what each parent carries and see every hatchling the pairing can produce, with the odds for each. Free, no signup, and it covers all 19 proven leopard gecko genes.
Leopard geckos are the reverse of ball pythons: a short list of proven single genes, and a very long list of line-bred colour and pattern. The calculator covers the 19 that inherit predictably and names the 43 that don't.
♂ Male
TRAITS CARRIED
Nothing selected — treated as a normal.
INCOMPLETE DOMINANT
RECESSIVE
DOMINANT
♀ Female
TRAITS CARRIED
Nothing selected — treated as a normal.
INCOMPLETE DOMINANT
RECESSIVE
DOMINANT
Predicted offspring
Add traits to one or both parents to see the odds.
Keep the pairing instead of re-typing it
My Reptile Atlas saves this against the two animals, then tracks the clutch through incubation and shows you how the real hatchlings compared to these odds. Free for up to 20 animals.
The three albino lines don't mix. Bell, Rainwater and Tremper are separate genes, so pairing a Bell to a Tremper gives you normal-looking double hets, not albinos. The calculator treats them as three genes because that's what they are.
Enigma carries Enigma Syndrome, a neurological condition, in every animal that has it. Lemon Frost is linked to an inherited skin cancer. Both are in the calculator because leaving them out wouldn't make them go away, and both are flagged.
Morphpedia records no allelic complexes in leopard geckos, so unlike ball pythons every gene here crosses independently.
Tangerine, hypo, bold stripe, carrot tail and most of what actually sets a price are line-bred. They're listed below, and no honest calculator gives you a percentage for them.
Enigma is a special case.Enigma Syndrome is a neurological condition — circling, star-gazing, loss of balance — and Morphpedia records it as affecting every Enigma to some degree. The odds below tell you how many hatchlings would carry the gene; they can't tell you how badly.
Lemon Frost is a special case.Lemon Frost is linked to iridophoroma, an inherited skin cancer. The calculator will work out the odds if you ask it to, but this is a known welfare problem rather than a rare complication.
Snow (Mack) is a special case.Morphpedia lists Mack Snow as sex linked. The trait odds here are right, but as with Banana in ball pythons, a Punnett square over ordinary genes can't tell you how the sexes will split.
The genes it covers
Every trait MorphMarket Morphpedia lists as recessive, incomplete dominant or dominant, grouped by how it inherits.
MorphMarket Morphpedia classes these as polygenic or structural. They're real traits and they set prices, but they don't sit on a single gene, so no Punnett square predicts them. Anything quoting you a percentage for harlequin or flame is guessing.
What does work for these is records: pair the same two animals for a few seasons and your own hatch data tells you far more than any average could. That's what My Reptile Atlas is for.