Imprecise excision of the insertion in simjj4A5.
mesothoracic tergum | P-stage (with simj7)
metathoracic leg | P-stage (with simjL)
pupal abdomen (with simj7)
simjL/simj16 animals survive to the late pupal stage. The pupae appear almost wild-type, but do display a variety of phenotypes, including short third legs. simj7/simj16 animals survive to the late pupal stage. The pupae appear almost wild-type, but do display a variety of phenotypes, including legs that are bent back, a split notum and folded wings. Some mutants show necrosis near the head region, while others lacks pigmentation and bristles in the abdominal region. Homozygous clones in the imaginal disc appear to be roughly equal in size to their twin spots, indicating that simj is not essential for cell viability or cell growth.
Order of alleles (from weak to strong) is: simj16, simj7, simjL, simjS, simjH, simjJ = simj10 = simjA = Df(3L)lxd6.