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.

Morph breeding · September 12, 2026 · 8 min read

Leopard gecko morphs: a keeper's guide

Albino strains that do not mix, eclipse and the enigma problem, blizzard and patternless — the leopard gecko gene map, with the honesty most morph lists skip.

Leopard geckos have one of the deepest morph catalogs in the hobby, and also one of the most honest problems: several famous morphs come with health baggage that polite morph lists leave off. This guide covers both.

The three albinos that are not one albino

Tremper, Bell and Rainwater (Las Vegas) albinos are three separate recessive mutations at different loci. They look similar and they do not complement: crossing two different strains produces normal-looking double-hets, not albinos. 'Albino' without a strain name is an incomplete description — always ask which.

The workhorse recessives

Blizzard: patternless recessive, colours shifting with line and temperature.
Patternless (Murphy patternless): another recessive that erases banding, historically confused with leucistic descriptions.
Eclipse: a recessive that disrupts pattern and produces solid-colour eyes in combination; strong eclipses can have reduced photoreception — worth knowing, not a dealbreaker.

Enigma: the honesty section

Enigma is a dominant morph with a real neurological syndrome — circling, stargazing, poor prey tracking — that varies from barely noticeable to disabling, and cannot be predicted from appearance. Many experienced breeders no longer produce them deliberately. If you keep one, give it a simple enclosure and easy prey; if you are shopping, know the name carries the risk.

We include genes like this in the calculator with their inheritance, because deciding knowingly requires the information — but 'can' and 'should' are different questions.

Line-bred looks

Tangerine, hypo, baldy, carrot-tail and the various 'blood' lines are selections, not single genes. They intensify over generations and wash out when outcrossed. Price them as quality claims, not as genetics, and record them on the animal rather than expecting them in clutch odds.

Stacking sensibly

Classic combos like sunglow (tangerine line + Tremper albino) or RAPTOR (Tremper + eclipse + pattern) stack recessives that the calculator handles cleanly. Start with the albino strain settled — Tremper is the usual foundation precisely because Bell and Rainwater do not combine with it.

Try the free leopard gecko morph calculator

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.