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Diapause incidence of Drosophila ezoana in response to Nanda–Hamner light regimes. Percentage of diapausing flies plotted as function of period of the light/dark (LD) cycle. Each LD cycle consists of a fixed light phase of 10 h and a dark phase to make the required periodicity. Three distinct line‐types and symbols represent three separate experiments (runs R1–R3).
