Fig. 5.

Histogram and genomic locations of conserved, semi-conserved, and variable SMBGCs. Numbers of SMBGCs located > 0.5 Mb from telomeric repeats are shown in blue, while numbers of SMBGCs located on the ends of chromosomes < 0.5 Mb from telomeric repeats are shown in maroon. Gene clusters were classified as conserved if they were present in the same syntenic location in all strains and contained the same core gene content. Clusters were classified as semi-conserved if they were present in all strains but varied in either 1) SM core genes (core gene content) or 2) genomic location (non-syntenic). Clusters were classified as variable if they were only shared by a few strains (shared by 5, 3, and 2 strains) or present in only one strain (strain unique). Semi-variable and variable clusters were enriched in regions located < 0.05 Mb from telomeric repeats on the ends of chromosomes