Genome scans of 31 organisms. A plot of the number of repair proteins detected in 31 vertebrate genomes as a function of Method P threshold. In all organisms, the predicted number of repair proteins decays exponentially with increasing detection threshold. Several genomes have been removed from the figure to prevent genome names from overlapping the results. At thresholds greater than 0, all organisms are predicted to have proteins related to DNA repair, consistent with the findings in .