FIG. 3.

Maximum clade credibility phylogeny of the twenty-eight 936-like phage. Branch values represent posterior probability support. Branches are colored according to the ancestral state of geographic location. Taxa names indicate factory key_phage_year of isolation. The tree is midpoint rooted. On the grid: first column indicates host tropism, black: 222/385 and gray: 92/818/962 Lactococcus lactis host strains. Second, third, and fourth columns are codons under positive selection 155, 165, and 167, respectively. Blue: methionine; white: gap; light blue: leucine; dark blue: phenylalanine; yellow: tyrosine; orange: serine; red: threonine; green: alanine. Arrows below time line relate dispersion analysis described in figure 5.