Imprecise excision of the progenitor insertion, resulting in a deletion that removes part of the γCop gene. A few base pairs of the 5' inverted repeat from the P-element remain.
474 bp deletion resulting from the imprecise excision of P{lArB}gammaCOPA383.2M3. 15 bases from the P element remain at the site of the excision. Deletion breakpoints from sequence in Figure S1.
Homozygotes die as late embryos with weakly pigmented cuticles and only poorly differentiated denticles.