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Mean in silico and phylogenetically loss time as a function of the k-robustness index. (A) Mean in silico gene loss time as a function of the number of backup reactions a gene has in the metabolic network (its k-robustness; Deutscher et al, 2006). (B) Phylogenetically reconstructed gene loss time, also as a function of gene backup number. Error bars in both cases represent the standard deviation.
