Fig. 7. Organ identity gene expression in wild type and lip1 lip2 double mutant. RNA in situ hybidizations on wild-type (A and C) and lip1 lip2 (B and D) sections of floral buds at stage 6, probed with PLE (A and B) or DEF (C and D). Expression patterns for PLE and DEF in the double mutant sections are similar to those observed in wild type. In particular, no ectopic expression of PLE is seen in whorl 2. Floral whorls labelled as sepal (1), petal (2), stamen (3) and carpel (4). Scale bars = 100 µm.