Quote Originally Posted by paingod View Post
Maybe I am getting the results confused with dom genes?

if you breed 2 spiders wouldnt you get 50% spiders & 50% normals?
Not exactly, if Spider is truely dom and the Homozygous version is not lethal like many believe it to be, then the results would be in the favor of the spider

25% Homozygous Spider
50% Heterozygous Spider
25% Normal

As a dominate trait the Homo & Het would visual be the same so you would in theory get 75% Spider and 25 % Normal.