Streptomycin (str) and tetracycline (tet) are two different antibiotics. We perform transformation experiment using a prototroph strain of E. coli with genotype strS tetS and an R plasmid carrying a gene that is responsible for the resistance to tetracycline. In which medium can the successful transformant grow? R denotes antibiotic resistance; S denotes antibiotic sensitivity.Medium #1: Glucose minimal mediumMedium #2: Glucose minimal medium with streptomycinMedium #3: Complete medium with tetracyclineMedium #4: Complete medium with streptomycin and tetracycline

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