Skin colour (TFEC) Ball Python
peer reviewedTFECrecessive
How it inherits
- One copy
- One copy shows nothing at all. The animal looks ordinary and is called a carrier, or “het”.
- Two copies
- Two copies, one from each parent, are needed before it appears.
Skin colour (TFEC) carrier × Skin colour (TFEC) carrier
Four ways the two can meet.
1 in 4het Skin colour (TFEC)
1 in 4het Skin colour (TFEC)
1 in 4Skin colour (TFEC)
1 in 4Normal
- het Skin colour (TFEC)50%
- Skin colour (TFEC)25%
- Normal25%
A pale box is an animal that shows the morph. These are the odds for each egg on its own, not a promise about a clutch.
What this rests on
A peer-reviewed paper identifies the variant behind this morph in the gene TFEC.
- Piebaldism and chromatophore development in reptiles are linked to the tfec gene. — Curr Biol 2023
- Genetics and biology of coloration in reptiles: The curious case of the Lemon Frost geckos. — Physiol Genomics 2023
- On the role of TFEC in reptilian coloration. — Front Cell Dev Biol 2024
What happens if you breed it
Every pairing involving Skin colour (TFEC), worked out gene by gene — including what the clutch can be and anything documented about the animals it produces.