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Fig. 4 | BMC Evolutionary Biology

Fig. 4

From: Substrate cross-feeding affects the speed and trajectory of molecular evolution within a synthetic microbial assemblage

Fig. 4

The numbers of genetic changes acquired by the completely denitrifying clones (one clone per culture) compared to the sums of genetic changes acquired by the nitrite (NO2−) producing and reducing clones (one clone each per culture) after 700 generations of evolution at pH 7.5 (weak nitrite toxicity, weak interdependence). The horizontal bar and P-value indicate the outcome from a two-sample Wilcoxon rank-sum test. The star indicates a P-value less than 0.05. Data are presented as Tukey box-plots. The numbers of genetic changes include synonymous and non-synonymous point mutations, insertions, deletions, and multiplications. The sums of genetic changes acquired by the nitrite producing and reducing clones are significantly greater than the numbers of genetic changes acquired by the completely denitrifying clones

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