Question

Using imprints from a culture plate having bacterial colonies, you can select streptomycin resistant mutants and prove that such mutations do not originate as an adaptation. The imprints need to be inoculated on __________.

• A. Plates with and without streptomycin.
• B. Plates with minimal medium.
• C. Plates with streptomycin.
• D. Plates without streptomycin.

Answer 1

The correct option is C Plates with streptomycin.

Plates with streptomycin allow to propagate only those bacteria which are resistant to the antibiotic. While in those plates where streptomycin is absent, both resistant and non-resistant bacteria will grow normally. Thus, Option C is correct.