There are no morphs that can give off multiple genes. The bumble bee is a combo morph which means that to produce one you have to breed a pastel with a spider. The pastel and spider are considered base morphs as they occurs naturally in the wild.

Check out this site. On each individual morphs page it says if it is a base morph or combo (also called designer morphs) along with what the genetics are.

http://www.worldofballpythons.com/morphs/