codominant or dominant spiders

[Egapal]

So a het spider would look exactly the same as a homozygous spider.

No one has come forward about their homozygous spider as of yet, so it is still very possible it is homozygous lethal.

So if the spider mutation is homozygous lethal would you then say that its codominant or would you say that the lethal/non lethal question is irrelevant.

Like I said, BHB believes he has a homozygous pin, because when bred to normals, he gets all pins.

My understanding is that the pinstripe is a separate mutation from the spider. Pinstripe may be a true dominant mutation this would not prove anything regarding the spider mutation. The fact that a spinner has been produced and its is yet another phenotype would help validate that they are separate mutations.