UAS regulatory sequences drive expression of numb sequences where three putative phospho-sites (T143, S248 and S447) have been mutated to be phosphomimetic (i.e. appear always phosphorylated).
Overexpression of numbTS2D.Scer\UAS in larval brain neuroblasts under the control of Scer\GAL4insc-Mz1407 does not affect neuroblast number.