amorphic allele - genetic evidence
Block 5 of 5 conserved blocks of the ap enhancer region have been inserted into the attP site in TI{TI}apattPΔEnh, from which all 27kb of enhancer sequences have been removed.
visible (with apDG3)
wing (with apDG3)
No wing tissue is formed in apC5/apDG3 flies.