Can you pick out the statements that accurately describe the development of antibiotic resistance?
A: Antibiotic resistance is not an example of natural selection.
B: Mutations may be a source of variation in any population of bacteria.
C: When antibiotics are used at first, all the disease-causing bacteria are killed.
D: There is always variation in a population and might include resistant bacteria.
E: Bacteria that are not initially killed by the antibiotic, reproduce passing the resistance on to offspring.