Construct: Deletion of sequences encoding nos amino acid residues 43 to 116.
wild-type
nanosΔB rescues nanos18
nanosΔB rescues nanosBN
Rescues the abdominal segmentation defects seen in embryos derived from nosBN females. Rescues the oogenesis defects seen in nos18 hemizygous females; females lay fertilised eggs and have ovaries of normal size.