Figure 5.

Relative fitness of the rpoB mutants measured in different conditions. The mean relative fitness values are indicated in the top of the bars. The gray color corresponds to an advantageous fitness effect of the mutations in relation to the ancestor, the dark color corresponds to a deleterious fitness effect of the mutations in relation to the ancestor, and the white color corresponds to a neutral fitness effect of the mutations in relation to the ancestor. The asterisks represent a significant difference from a mean fitness of 1.0, based on one-tailed t-distribution with n-1 degrees of freedom. One asterisk represents significance at P < 0.05; two denote significance at P < 0.01; three convey significance at P < 0.001.

Rodríguez-Verdugo et al. BMC Evolutionary Biology 2013 13:50   doi:10.1186/1471-2148-13-50
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