The following table (data adapted from Khodursky et al., 2000) presents the percentage of DNA synthesis after 15 minutes from initiation for four strains of Escherichia coli grown under permissive (30°C) and restrictive (42°C) temperatures and various concentrations of the gyrase inhibitor novobiocin. The strains have the following characteristics and genotypes: wild type, temperature-sensitive gyrase mutation (gyrts), novobiocin resistant (gyrr), and the double mutant (gyrts,r). Based on data contained in the table, assign the appropriate genotypes to the strains labeled A, B, C, and D.
Temperature (°C) | 30 | 42 | ||||
Novobiocin (g/ml) | 0 | 5 | 40 | 0 | 5 | 40 |
Bacterial strain |
| |||||
A | 100 | 56 | 9 | 40 | 26 | 1 |
B | 100 | 100 | 100 | 41 | 43 | 40 |
C | 100 | 58 | 4 | 100 | 56 | 3 |
D | 100 | 100 | 100 | 100 | 100 | 100 |
We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.