Hognose Snake morph
Hognose Snake (Heterodon nasicus)
A recessive Western hognose trait associated with increased dark pigmentation and iridescence. Animals often darken as they mature; pattern may become less distinct. Two copies produce the visual trait; one copy is a nonvisual carrier.
How to identify it: Dark coloration that can intensify with age, with increased iridescence. Confirm inheritance through documented parentage or breeding; appearance alone does not identify carriers.
Sable follows a recessive inheritance pattern, carried on the Sable allele (locus SABL).
Because Sable is recessive, an animal needs two copies of the allele to show the trait visually. An animal with a single copy is called het sable (heterozygous). A het animal looks normal but carries the gene, so pairing two het sable animals produces, on average, one in four visual sable offspring.
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