I'm sorry if this is posted somewhere else, I was having a tough time getting the search terms correct. I have a question about BEL combos, as in how would you know if you had one? If you have some sort of BEL, and an extra gene that's not a pattern changer (pastel, hypo, axanthic, or whatever) how would you be able to tell it's actually there assuming the parents are not both supers or visuals (if recessive)? I get that you could possibly see a pattern change under uv lighting, but how do you determine the presence of other genes in a plain white snake?