Quote Originally Posted by muddoc View Post
So you mean that my Het Ivory is supposed to look normal. Dang I want my money back. LOL. I am just busting Ed's chops. Let us not forget that Heterozygous does not mean normal looking (unless you are refering to a Recessive trait). A Spider is a Heterozygous animal, because it does not have a pair of alleles.
Unless of course it is a homozygous spider! I know, I know, that hasn't been proven, but until it is one way or another we have to be open to the possibility right?

I wonder if the op meant to ask how to tell the difference between a het and a normal??? If so, with recessive traits, its only through breeding. With codominant and dominant, there are visual differences, which is what Tim was saying. Spider is assumed to be a dominant trait, and thus far, no homozygous spiders have been proven. So, it is sometimes assumed that homozygous spiders don't exist.

Steve