Various techniques have been developed to isolate strains of bacteria carrying a particular mutation. One of them is, 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 an antibiotic that only kills growing cells. In this environment,

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


Answer: A

Biology & Microbiology

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What will be an ideal response?

Biology & Microbiology