Dominant

In this model we'll use a Spider** as the dominant example. The 'Super' version or rather 'homozygous' snake is no different in appearance from the heterozygous snake. Therefore only when bred and consistency in outcome is achieved, will you be able to determine the homozygous individual.
This chart can be applied to all dominant morphs.

Homozygous = Super Spider
Heterozygous = Spider

Homozygous - means a pair of identical genes. These may be two identical normal genes or two identical mutant genes.

Heterozygous - means a pair of non-identical alleles. Alleles are different versions of the same gene. The usual case is a normal allele paired with a changed (mutant) allele. An individual that is heterozygous for a dominant mutant gene look like an individual that is homozygous for the dominant mutant gene.

**As of yet, and to the best of my knowledge Spiders have not been proven to be a true 'dominant' mutation although they are labeled as such. Many breeders believe it is only a matter of time before there is definite proof either way. Even if one is produced it is also very possible that the information may not be released by the individual that produced it in order to protect there privacy. As the ball python world turns...

Hover mouse over pairings to get results*