Construct: Deletion of sequences encoding nos amino acid residues 5 to 150.

nanos^ΔG rescues nanos¹⁸

nanos^ΔG partially rescues nanos^BN

Partially rescues the abdominal segmentation defects seen in embryos derived from nos^BN females; embryos derived from females carrying one copy of nos^ΔG have 6 abdominal segments (although embryos derived from females carrying two copies of nos^ΔG are completely rescued). Rescues the oogenesis defects seen in nos¹⁸ hemizygous females; females lay fertilised eggs and have ovaries of normal size.