TABLE 3.
Relative fitness of derived strains compared to the parental strain
| Derived strains | sacB-neo cassette | Phenotype | No. of isolatesa | Relative fitnessb | Variance |
|---|---|---|---|---|---|
| BSV1 | + | Sacs Neor | 1 | 0.99 | 3.8 × 10−5 |
| BSV1 sacB | + | Sacr Neor | 3 | 0.98 | 1.4 × 10−5 |
| BSV1 recombinant | − | Sacr Neos | 4 | 1.00c | 2.5 × 10−5 |
a
Number of independent isolates used in experiments to determine relative fitness.
b
Relative fitness values are the arithmetic averages of five replicate measurements for each isolate.
c
The fitness of BSV1 recombinants was significantly different from that of BSV1 (P = 0.0089) and BSV1 sacB (P = 0.034) based on analysis of variance.