A. Temperature shift 3h before the test. Flies with a rescue construct show an intermediate PER level, significantly different from both the mutant and the
control flies. B. Temperature shifts during the starvation period, but
not immediately before the test. Flies with a rescue construct behave similarly
as mutant flies. Total number of
proboscis extension responses is represented in
boxplots (see Fig.1). Numbers
indicate sample size,
asterisks denote significant difference
between groups (paired Wilcoxon rank sum test, p < 0.05).