Imprecise excision of the progenitor insertion, P{GawB}pydNP4400, results in a small deletion in pyd.
Over 80% of pydex79/Df(3R)p-XT103 flies display more than four dorsocentral macrochaetae.
Wings from pydex79/Df(3R)p-XT103 flies are broader compared to control wings. A 10% increase in the number of cells found between the L3 and L4 veins is observed.