Homozygous Spider Morph

[The Serpent Merchant]

So you're saying you'd call a Super Black Pastel a co-dominant snake, even though when paired to a normal you'd get nothing but Black Pastels? The same as if there was a homozygous Spider, you put to a normal and get nothing but Spiders. Because I wouldn't.

That is the definition of a Co-Dom animal. It is only dominate if both the het and homo are identical. The black pastel and super black pastel look different so it cannot be a dominate trait.