Locomotor defects of sialylation mutants

Wildtype flies can right themselves quickly when they momentarily fall upside down. Watch it below.

 

Every fly shown here was on its back for at least one frame (250 ms)

Mutant flies are unable to promptly right themselves when they fall upside down. Watch it below.

 

It takes on average ~20 sec for 5-day-old mutants to right themselves