You are studying petal development in the African Bongo flower. You have isolated several mutants that fail to develop petals (NPD (no petal development]). Before you go about characterizing these further you would like to know how many genes you are dealing with. To examine this, you do a complementation test with all of your mutants. WT = wild type. NPDI NPD2 NPD3 NPD4 NPD5 NPD6 NPD7 NPD8 NPD9 WT NPDI + NPDI + + + + NPD2 + + + + + + NPD3 + + NPD4 + + + NPD5 NPD6 + + + NPD7 + + + NPD8 + NPD9 + Which one of your mutants has a dominant mutation?