Construct: Mutant hb NRE, included within a DdeI-XbaI 152 nucleotide fragment with first three conserved guanosines mutated to uracils, is fused 3' to the 10kb genomic BamHI fragment of hbC20-hb.
lethal - all die before end of larval stage | dominant | maternal effect
some die during larval stage | maternal effect
abdominal segment | maternal effect
Abdominal segmentation is repressed in affected embryos, which develop into larvae with two to five abdominal segments.