You are studying a biochemical pathway and isolate Neurospora mutants I, II, and III. Mutant I can grow if you supplement the medium with Z. Mutant II can grow if you supplement the medium with X, Y,...

You are studying a biochemical pathway and isolate Neurospora mutants I, II, and III.
Mutant I can grow if you supplement the medium with Z.
Mutant II can grow if you supplement the medium with X, Y, or Z.
Mutant III can grow if you supplement the medium with X and Z, but not with Y.

Draw a biochemical pathway that shows the correct order for compounds X, Y, and Z and for the enzymes that each mutant is defective for.