FIG 2.

Fitness levels (relative growth rates) of laboratory-selected E. coli mutants, where E. coli MG1655 is set to 1.0. Strain names and mutated genes are shown.

Fitness levels (relative growth rates) of laboratory-selected E. coli mutants, where E. coli MG1655 is set to 1.0. Strain names and mutated genes are shown.