Figure 6

Circadian resonance in cyanobacteria. Rhythmic strains having different free-running periods were competed under LD cycles of different lengths. Strains whose free-running period matched that of LD cycles out-competed those with deviant periods. Middle panels represent initial composition of the competing strains. Values in the parenthesis indicate the free-running period of the cyanobacterial strains. (Figure modified after Ouyang et al, 1998 [6])