Fig. 6. Double mutant analyses with inco-1. (A) def flower with petals replaced by sepals. (B) inco def flower. In contrast to inco flowers (Fig. 4), lateral sepal size is hardly affected and no fusions occur to second whorl organs. d, dorsal sepal (C) Inflorescence of the strong flo-640 mutant compared with the weak flo-662 allele shown in D. (E) inco flo-662 inflorescence with axillary inflorescences instead of flowers (arrow). (G,H) Flower formation is enhanced in inco squa double mutants compared with squa (F) grown under identical conditions in segregating populations. Asterisks indicate prophylls. Scale bars: 1 cm.