Various Techniques Have Been Developed to Isolate Strains of Bacteria

question 17

Multiple Choice

Various techniques have been developed to isolate strains of bacteria carrying a particular mutation.In one,bacteria containing wild-type cells and cells of a desired mutant are grown on a medium lacking the nutrient for which the desired mutants are auxotrophic but containing the an antibiotic that only kills growing cells.In this environment,

• A)both wild-type and mutant cells are killed.
• B)both wild-type and mutant cells survive.
• C)wild-type cells survive;mutant cells die.
• D)wild-type cells die;mutant cells survive.
• E)only double mutants survivE.