P{GawB} insertion 22 bp 5' of start of shep transcript RB; approximately 30 kb into approximately 70-kb first intron of shep transcript RD; approximately 40 kb into approximately 80-kb second intron of shep transcript RA.
Flies show an aberrant gravitaxic response in a vertical gravitaxic maze assay, and show wild type behaviour in a horizontal maze. Male courtship activity is comparable to wild type, and flight is not seriously impaired.