Worm Tracks (IMAGE) Society for Neuroscience Caption Representative tracks left by worms. Four tracks each are shown. Males move around more than hermaphrodites. In mutants that cannot produce dopamine, the sex difference in locomotor activity is smaller. Scale bar = 5 mm. Credit Satoshi Suo Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.