Internal deletion of the P{EP} element, with 481bp of the element remaining.
24% of homozygous egg chambers contain only eight germline cells at room temperature. 96% of egg chambers have polytene nuclei and the karyosome appears abnormally shaped, diffuse or fragmented in 15.3% of egg chambers. Homozygous females lay few eggs, which are shorter than normal and have dorsal-ventral polarity defects (ranging from dorsalised with a ring of dorsal appendage material through to partially ventralised with a single dorsal appendage).
hfp9 is rescued by hfpotu.GFP