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Figure 8


Fig. 8. (A) Mean phase of the morning activity peak of the selected and control flies under 12:12 h LD cycle. The mean phase of the morning activity peak was estimated as the time interval between the morning peaks and lights-on, averaged over 10 consecutive cycles. (B) Mean phase of the evening activity peak was estimated as the average time interval between the evening peaks and light-off, averaged over 10 consecutive cycles. Error bars represent 95% confidence intervals (95%CI) around the mean for visual hypothesis testing. A total of early (N=161), control (N=171), and late (N=156) flies were used to estimate the mean phase of the morning and evening activity peaks. (C) The frequency distribution of mean phase of morning, and (d) evening activity peak of the early, control and late populations under 12:12 h LD cycles. Time (h) is plotted along the x-axis and percentage frequency along the y-axis.





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