Skip to main content
Figure 2 | BMC Evolutionary Biology

Figure 2

From: Experimental evolution of aging in a bacterium

Figure 2

Life history changes during experimental evolution. (A) The population doubling time decreased by more than a factor of 2 in the course of 2000 generations of evolution. At each time point, five clonal isolates per population were analyzed. Error bars denoting standard error of the mean are smaller than the size of the symbols, except for time point 0; (B) Age at first division, a, and the average interval between consecutive divisions in the 20 hours after the first division, b, of ancestor and five isolates from each population after 1000 generations. All populations differed significantly from the ancestor in both traits (p < 0.05). The difference between ancestor and evolved populations is large in the age at first reproduction, and small in the interval between consecutive divisions. Abbreviations: Anc: ancestor; Pop1 to Pop3: population 1 to population 3.

Back to article page