Fig. 2.

Phage relationship under gene content dissimilarity index. GCD scores given by each pairwise comparison for a) all staphylococcal, b) S. aureus phage genomes or c) S. epidermidis phage genomes (where GCD = 1 meaning 100% dissimilar, GCD = 0 meaning 100% similar). d MaxGCDGap relationships for all staphylococcal phages ordered by median (where higher MaxGCDGap mean most diverse and lower MaxGCDGap mean less diverse, relative to the groups analysed). MaxGCDGap relationships for e) cluster of phages (a to d) or for f) subclusters of phages (A1-A2, B1-B21, C1-C6, D1-D2) and the singletons, where each data point represents a single phage genome. Horizontal lines show the MaxGCDGap mean per cluster and subclusters. Cluster and subclusters with less than five members were omitted from the analysis in e and f