Imprecise excision of the P{PZ} element. Part of the P-element is still present (the part that remains is the part of the element most proximal to the Hr38 transcription unit). Genomic sequences adjacent to the site of P{PZ} insertion (on the side distal to the Hr38 transcription unit) may or may not be affected.
Lethality occurs during the pupal stage in homozygotes, and during the larval and adult stages in hemizygotes.
Selected as: a ry- fly.