If you took research for course credit, it goes under whatever department the class was offered from. In my Case, my research was Bio 199, so it went towards my Bio GPA. If you took it through Chem, it goes to chem, etc. If you took it though an "Honors" or "Independent Study" department, which I hear is how some schools do it now, it gets really tricky, and you should call AADSAS about it.