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  1. In Lederberg's replica experiment what shall be used to obtain streptomycin-resistant strain?
    1. minimal medium and streptomycin
    2. complete medium and streptomycin
    3. only minimal medium
    4. only complete medium
Correct Option: B

This combination allows to select only streptomycin resistant strains and non resistant strains would die on medium containing antibiotic streptomycin.



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