The ple genomic region, including 4.1kb of upstream promoter sequences is cloned (to generate ple+t10.988) and then intronic sequences i[[2]], i[[3]], and i[[4]] are removed.
The presence of pleΔ2g transgene either significantly rescues ple2 embryonic lethality or full pupal rescue. Few rescued adults are observed with pleΔ2g, possibly because of a limiting expression level of the transgene at this stage.