FLPase mediated recombination between PBac{WH}bolf00596 and PBac{WH}bolf00724 has deleted sequence between these two insertions, leaving a hybrid element, PBac{WHr}bol40, inserted at the join.
Axon pruning during pupal stages occurs normally in gamma mushroom body neurons that are part of bol40 homozygous somatic clones. No gross morphological brain defects are caused by these clones.