Scer\GAL4ap-md544-mediated expression of CtBPdsRNA.Scer\UAS.HIZ causes loss of posterior dorsocentral bristles and tufted microchaeta bristles. Some of the microchaetes are either missing or disorientated.
A putative cell polarity abnormality of the microchaetes is observed when CtBPdsRNA.Scer\UAS.HIZ is expressed using Scer\GAL4ap-md544.