Box? When I say "dropdown box," I mean the thing you can click that turns into a list where you can choose a gene. There is one box/list for each locus (the E locus, the Co Columbian locus, the Db Darkbrown locus, and so on down the list. Most of them we just call by the name of the main gene-- like Columbian-- but the E locus has so many options it gets called the "e locus" rather than calling it Extended Black or Duckwing or Wheaten or Birchen or something like that.)That clears up some thing. I stated in the post I have been using the chicken calculator, but I wasn't aware there was a box. I will be trying that out.