Table 5. Estimated frequency of F plasmids in populations Ara+1 and Ara–3 of the STLE.

Population	Generation	Average coverage of chromosome	Average coverage of plasmid	Estimated plasmid frequency
Ara+1	1000	647.8	3	0.0046
Ara+1	1200	686.9	250.3	0.36
Ara–3	1000	730.2	545.1	0.75
Ara–3	1200	433.1	213.6	0.49

Note: Estimated plasmid frequency assumes one chromosome per cell and one plasmid per plasmid-bearing cell. Average coverage is the mean number of sequencing reads that map to the chromosome or plasmid per site.