Question

which of the following apply to the development of streptomycin resistance in e coli? check all that apply the e coli population has genetic variation. the selective agent is streptomycin. the mutation resulting in streptomycin resistance is random. e coli changes its gene structure to become antibiotic resistant in the presence of streptomycin.

Explanation:

• Genetic variation in the E. coli population provides the raw - material for evolution of resistance.
• Streptomycin acts as the selective agent, favoring resistant E. coli.
• Mutations are random events, and those resulting in streptomycin resistance are no exception. E. coli does not actively change its gene structure in a non - random way in response to streptomycin; rather, resistant mutants pre - exist in the population and are selected for.

Answer:

The E. coli population has genetic variation.
The selective agent is streptomycin.
The mutation resulting in streptomycin resistance is random.