Excision of the P{PZ} element.
Homozygous adults generally have the normal complement of dorsal longitudinal flight muscles (DLMs), although 13% of DLM fibres are abnormal. The average flight score of homozygous flies is 1.70 +/- 0.074 compared to 2.60 +/- 0.032 in wild-type flies in a standard flight performance assay. 48% of homozygous embryos show a specific cluster of apoptotic cells in a specific region of the posterior pole near the developing genital disc (compared to less than 1% of wild-type embryos).
Revertant.