A deletion removing approximately 60 kb of DNA, beginning in the first intron, and taking out the 1st intron (C isoform specific) and approximately 50kb of upstream sequence.
flightless (with Eip75BΔ51)
Approximately 33% of Eip75B1/Eip75BΔ51 animals die as pharate adults, with normal adult pigmentation and fully developed appendages. The animals eclose and are severely uncoordinated, displaying difficulty in walking and an inability to fly. These animals die within a week following eclosion, but appear morphologically normal with the exception of black spots that cover about one quarter of the surface of the eye.
Segraves (1988).