Homozygous pnrV1 mutants lack dorsocentral bristles.
pnrMD237/pnrV1 flies show loss of dorsocentral and scutellar macrochaetae.
pnrV1/pnrVX1 mutants show abnormal muscle attachments. The dorsal medial muscle (DLM)s appear as a single fibre that resembles the lateral oblique dorsal muscle (DVM III) in its orientation.
In pnrV1/pnrVX1 mutants the wg-dependent dorsocentral bristles and scutellar bristles are missing.
In(3R)iab6G/pnrV1 flies show a severe cleft, head defects and split tergites. Heterozygotes with Df(3R)sbd45 lack bristles and occasionally show head defects.