Table 1.

Growth properties of competition survivors and their ancestors

Mutation rate (relative to wild type)Doubling time (min)Maximum culture density (OD600)
TubeSurvivorPrecompetitionPostcompetitionP valuePrecompetitionPostcompetitionP value
19D24731.2 ± 0.732.1 ± 0.43.10 ± 0.104.45 ± 0.140.002
24G42231.9 ± 0.531.3 ± 0.82.98 ± 0.073.71 ± 0.100.005
34G42231.9 ± 0.531.6 ± 0.42.98 ± 0.073.23 ± 0.07
42E21031.6 ± 0.529.2 ± 0.30.033.07 ± 0.083.10 ± 0.06
54G42231.9 ± 0.531.4 ± 0.52.98 ± 0.073.56 ± 0.100.01
62E21031.6 ± 0.531.8 ± 0.63.07 ± 0.083.62 ± 0.110.02
  • Cultures and measurements were made in triplicate with reported values given as the mean ± SE. P values were calculated by the Student’s t test.