Construct: Insertion of 145 bp sequence encoding hb1 and hb2 NREs 120 nucleotides downstream of hb coding region of hbΔ.
Embryos derived from females expressing hbhb1+hb2 show fully restored abdominal patterning compared to hbΔ. All eight abdominal segments are present.
hb protein is completely repressed in the posterior: larvae have normal abdominal segments.