Circadian values for daily activity rhythms in inbred and transgenic flies.

aYoung male flies were exposed to five days of 12∶12LD at the indicated temperature, followed by 7 days in continuous darkness (DD). For each genotype, activity data from DD was averaged for each individual fly and then a group average was determined. For the transgenic flies, data from at least three independent lines was used.bn, number of flies used to calculate the values shown and that survived the entire testing period.cFlies with a power value of greater than 10 and period ≥ 20 and ≤ 30, were defined as rhythmic.dPower is a measure of the strength or amplitude of the rhythm in arbitrary units.