Coming from EPISTASIS
=Collaboration= Collaboration is another example of how two genes interact to produce a single characteristic. Collaboration is much like a standard dihybrid cross, only that, instead of producing 4 different possible combinations of two different characteristics, we see four different variations on the single characteristic. For example, in chickens two genes R and P control the shape of comb produced on top of the chickens head. A standard Dihybrid cross (RrPp x RrPp) yields: [image:] You can see that we have the same ratio as a standard dihybrid cross. The only difference is that here we have four unique variations on a single characteristic rather than four different combinations of two different characteristics.