Question

In Lederberg's replica plating experiment, what should be used to obtain streptomycin resistant strain?

• A. Minimal medium and streptomycine
• B. Complete medium and streptomycine
• C. Only minimal medium
• D. Only complete medium

Answer 1

The correct option is B Complete medium and streptomycine

Some bacteria from their population are able to grow in the streptomycin containing medium because they carry the streptomycin-resistant gene. These strains get selected in streptomycin containing the medium. Lederberg, by performing replica plating experiment containing complete medium with antibiotic (streptomycin), demonstrated the process of selection of streptomycin-resistant strains.

So, the correct answer is 'Complete medium and streptomycin'.