In embryos derived from double germline clones of loco^P283 and raps^unspecified, the majority of neuroblasts undergo symmetric divisions to generate two similar-sized daughter cells in stage 10 mutant embryos, in 60% of cases. The cleavage plane is placed near the middle of the two centrosomes and the spindle is positioned symmetrically with both centrosomes lying in close proximity to the cell cortex. Astral microtubules, which are normally associated only with the apical centrosome in wild-type neuroblasts, can emanate from both centrosomes in loco^P283 and raps^unspecified double mutant neuroblasts.

In raps^unspecified insc²² double mutant neuroblasts, both centrosomes are associated with astral microtubules, with a cap structure forming over each centrosome from metaphase onwards. This phenotype is not observed in single mutants for these genes. Expression of G-iα65A^Scer\UAS.cCa, under the regulation of Scer\GAL4^{mat.αTub67C.T:Hsim\VP16} in a raps^unspecified background results in equal size division occurring in 62% of neuroblasts.