Essential Genetics 6th Edition by Daniel Hartl

Exercise 12

What floral phenotype would be expected of a mutation resulting in a loss-of-function of ap3 and pi ? A gain-of-function mutation in which both ap3 and pi were expressed in whorls 1 and 4 as well as whorls 2 and 3? What do these results imply about Ap3/Pi being necessary or necessary and sufficient for the developmental fate of the four whorls?