Quote Originally Posted by Gomojoe View Post
But as I understand it, a homo of a dominate trait would give you 100% chance of seeing the trait in the offspring but wouldn't be any different from a het.
You are correct. Ideally, there is no visible difference between the homozygous snake and the heterozygous snake. The only difference is that all of the homozygous snake's offspring have the gene and show the trait. While only approximately half of the heterozygous snake's offspring have the gene and show the trait.

Really good dominant mutant genes are rare in reptiles. Pigeons show several dominant mutant genes. One of those dominant genes is called spread and produces a solid black pigeon. (A normal pigeon has slate gray wings with two black bars on each wing. The head and tail are darker than the wings.)