Amelanism Red Cornsnake
peer reviewedOCA2recessive
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.
Amelanism carrier × Amelanism carrier
Four ways the two can meet.
1 in 4het Amelanism
1 in 4het Amelanism
1 in 4Amelanism
1 in 4Normal
- het Amelanism50%
- Amelanism25%
- 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 OCA2.
- Amelanism in the corn snake is associated with the insertion of an LTR-retrotransposon in the OCA2 gene. — Sci Rep 2015
- Color mutations in the corn snake (Elaphe guttata guttata): Review and additional breeding data — Journal of Heredity 1989
- Heredity of albinism in the corn snake, Elaphe guttata guttata, demonstrated in captive breedings. — Copeia 1962
- Genetics and biology of coloration in reptiles: The curious case of the Lemon Frost geckos. — Physiol Genomics 2023
- The genome sequence of the corn snake (Pantherophis guttatus), a valuable resource for EvoDevo studies in squamates. — Int J Dev Biol 2014
What happens if you breed it
Every pairing involving Amelanism, worked out gene by gene — including what the clutch can be and anything documented about the animals it produces.