The entire Gr68a gene has been replaced by a w+* marker.
abnormal courtship behavior | chemical conditional
Gr68aΔ1 mutant flies show reduced sensitivity to (S,Z,Z)-CH503 (a more potent stereoisomer of the gustatory sex pheromone CH503). In contrast to wild type, flies do not exhibit courtship defects in the presence of (S,Z,Z)-CH503.