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Originally Posted by Susan
When talking about any of the multiple cornsnake morphs, it is always "compared" to what is considered the normal, or "wild-type" cornsnake. All of the genetic morphs are recessive to the dominant normal/wild-type gene.... The normal/wild-type genes are dominant over the recessive morph genes.
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Correct me if I'm wrong, but I'd been under the impression that this is not always the case. We may someday discover a corn snake 'mutant' gene that is dominant or codominant to 'wild type' (and 'bloodred/diffuse' may actually already qualify if you get visual hets).
I know that, in mice, there's a mutant gene producing tan bellies that is visible even on wild-type Agouti.
Granted, the majority of known morphs are simple Mendelian recessives.