Not susceptible to p-Cresol.

When homozygous in females, causes reduced mating propensity and extended courtship durations.

Jumping ability very poor. In open field activity chamber tests, moves as much as wild-type initially (0-10 minutes) but becomes less active later (10-20 minutes); both speed and amount of movement affected (e.g. in aging tests, both metrics increase in parallel from day 1 to 16 of adulthood, whereas wild types show near-maximal levels of activity as young adults, with slow decline during subsequent one month).

Difficult to arouse for flight; flies abnormally slow (hovers and fixates on object while flying); runs and climbs slowly; slow optomotor response.

Mosaic analysis suggests primary defect could be in central nervous system or in muscles.