Spider Dominant Question

[piranhaking]

i see.. the only difference between dominants and co-dominants is that the het form of a dominant appears to look like its homozygous form, correct?

Dominant and Co-dominant both only require one copy of the gene to be present for the trait to show (unlike recessive, which requires 2 copies of the gene). The difference is that when is two copies of the dominant gene, it looks the same as if there was only one, but with co-dominant if there its two copies of the gene, it looks different than if there is only one.