Imprecise excision of the P{SUPor-P} element, resulting in deletion of ~8kb of genomic sequence including a Gyc76C exon.
Gyc76C3L043/Gyc76CKG03723ex33 transheterozygotes are lethal.
Flies whose wings contain small somatic clones homozygous mutant for Gyc76CKG03723ex33 often display disrupted posterior crossvein phenotype and occasionally other morphological defects such as blistering. Flies carrying larger clones (induced in the posterior wing compartment in a Minute/+ background to give them a growth advantage) do not survive to adulthood.
Gyc76CKG03723ex33 embryos show motor axon guidance defects as ISNb and SNa axons often fail to defasciculate and do not innervate their proper muscle targets. Gyc76CKG03723ex33/Gyc76CKG03723ex173 embryos show the same phenotype.