UASt regulatory sequences drive expression of the E(spl)m8-HLH HLH domain. The encoded protein acts as a weak dominant negative (as assayed by effects on bristle development).
scutum & macrochaeta & adult, with Scer\GAL4sca-537.4
Scer\GAL4sca-537.4-mediated expression enhances development of bristles on the notum.
E(spl)m8-HLHbHLH.UAS, Scer\GAL4455.2 is an enhancer of scutellar bristle | ectopic phenotype of Scer\GAL4455.2, l(1)scUAS.cHa
Weak increase in the number of ectopic scutellar macrochaetes of strain ZB1.4 (activator insertion Scer\GAL4455.2 is combined with l(1)scScer\UAS.cHa).