In ftz-f117/ftz-f119 animals the shape and size of 0-h prepupal leg imaginal discs are normal. The imaginal discs in 6-h prepupae are also normal. Mutant leg discs also show the successful transformation of cells from anisometric to isometric in the basitarsal and tibial segments.
In ftz-f117/ftz-f119 mutant pupae 24 after pupariation formation (APF), DNA degradation is blocked. The intact salivary glands possess large cytoplasmic vacuoles reminiscent of the cell morphology of wild-type 12 hour salivary glands. Adult head eversion occurs normally in these animals.