In this article we will discuss about selection of different types of mutants:- 1. Resistant Mutants 2. Regulation-Defective Mutants 3. Auxotrophic Mutants. 1. Resistant Mutants: From a wild-type bacterial population which is susceptible to agents like bacteriophage, various drugs, ultra-violet light etc., mutants which are resistant to any of these agents can be selected directly […]