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Figure 4


Fig. 4. (A) The phase-relationship between the emergence rhythm and the LD cycle of the selection and control populations at the 5th, 10th, 25th, 40th and 55th generations. The phase-relationship was estimated as the time interval between the primary peak of the emergence and `lights-on' in the LD cycle, averaged over 10 consecutive cycles. Error bars represent 95% confidence intervals (95%CI) around the mean across four replicate populations (10 vials per populations) for visual hypothesis testing. (B) The frequency distribution of phase-relationship 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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