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This experiment concerns with the isolation of streptomycin resistant mutants using a prototrophic Escherichia coli by the use of a simple gradient technique where streptomycin at the rate of 100ug/ml is added in the nutrient agar medium Following a spreadplate inoculation of E coli and incubation for 47 days, the development of bacterial colonies in the high streptomycin concentrationThis experiment concerns with the isolation of streptomycin resistant mutants using a prototrophic Escherichia coli by the use of a simple gradient technique where streptomycin at the rate of 100ug/ml is added in the nutrient agar medium Following a spreadplate inoculation of E coli and incubation for 47 days, the development of bacterial colonies in the high streptomycin concentrationStudents should examine cultures in containers, which have been taped and closed Colony morphology is a method that scientists use to describe the characteristics of an individual colony of bacteria growing on agar in a Petr