P{GawB} insertion approximately 1 kb into 4-kb first intron of dlg1 transcript RC; 5334 bp 5' of start of dlg1 transcript RF.
abnormal gravitaxis
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.