i have a predisposition to never want any spiders or morphs

[Seven-Thirty]

So technically how do we even know if the spider is co or dom?


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Well dominant just means that the homozygous (super) form looks the same as the heterozygous and since here hasn't been a proven super spider that looks like a regular spider and there hasn't been something that has hatched from a spider x spider clutch that isn't a spider or
normal, it is safe to assume that the super spider is a homozygous lethal and therefore a co-dominant trait.

No matter what the allele is, it has to fall under a locus that has two pairs of alleles. So no matter what the mutation is there will always be some sort of homozygous form whether it is a dominant, co-dominante/incomplete dominant or a homozygous lethal.

ALSO: spider does have an allelic combo in the form of black head in that black head x spider can produce an allelic snake that looks almost normal and has no wobble either. It's a weird complex.