Rescue fragment composed of genomic and cDNA sequences that contains Poxn upstream sequences and Poxn 5' leader, coding and 3' trailer sequences. The Poxn upstream sequences contain a deletion of some sequence.

The defects in taste bristles on the leg and labellum seen in Poxn^ΔM22-B5 flies are not rescued by Poxn^C1, while the defects in anterior wing margin taste bristles are slightly rescued. The leg and antenna segmentation defects seen in Poxn^ΔM22-B5 flies are not rescued by Poxn^C1. The defects in the posterior lobe and penis seen in Poxn^ΔM22-B5 males are not rescued by Poxn^C1 and male fertility is not rescued. Poxn^C1 does not rescue the flying capability of Poxn^ΔM22-B5 flies. Poxn^C1 does not rescue the courting defects of Poxn^ΔM22-B5 males. The defects in taste bristles on the leg, labellum and anterior wing margin seen in Poxn^ΔM22-B5 flies are partially rescued if the flies are carrying both Poxn^C1 and Poxn^ΔSH. The leg and antenna segmentation defects seen in Poxn^ΔM22-B5 flies are rescued if the flies are carrying both Poxn^C1 and Poxn^ΔSH. The defects in the posterior lobe and penis seen in Poxn^ΔM22-B5 males are rescued if the flies are carrying both Poxn^C1 and Poxn^ΔSH and male fertility is also rescued. The flying capability of Poxn^ΔM22-B5 flies is not rescued if the flies are also carrying both Poxn^C1 and Poxn^ΔSH. The courting defects (in both daylight and red light conditions) of Poxn^ΔM22-B5 males are rescued if the flies are carrying both Poxn^C1 and Poxn^ΔSH.