A 166 bp deletion and 10bp insertion that causes an in frame deletion of 56 amino acids from amino acid 472 to 527 and the addition of four amino acids. Position of mutation on reference sequence inferred by FlyBase curator based on author statement.
The percentage of gig109/gig193 mutants that survive to adult stages is increased from 0 to around 30% when flies are also TorE161K/+, to around 45% when flies are also TorA948V/+ or TorW1251R/+ and to 60% when they are Tor2L1/+. Around 2% of TorV2148D/+; gig109/gig193 flies survive to adulthood. Around 60% of gig109/gig193; TorΔP/+ flies survive to the pupal, but not the adult stage. However, one copy of the Tor+t9.4 transgene blocks the ability of TorΔP/+ to rescue gig109/gig193 flies to pupal viability. The Tor+t9.4 transgene reduces the amount of Tor2L1/+; gig109/gig193 flies that survive to the pupal stage from around 85% to around 65%.