Practice: Which of the following is a major difference between direct and indirect selection of mutants?
Concept #1: Mutant Detection
Practice: A scientist has a population of His+ prototroph and His- auxotroph cells and wants to select and separate the auxotrophs from the prototrophs. Which form of selection should the scientist use?
Concept #2: Mutant Detection
Practice: Replica plating is an example of which type of mutant selection?
Practice: What types of bacteria will be growing on the nutrient agar and minimal media at the end of a replica plating experiment?
Practice: Why do prototroph bacteria grow on minimal media but auxotroph bacteria do not?
Practice: Which of the following colonies of bacteria are composed of His- auxotroph bacteria?
Practice: What characteristics are true about the colonies living on the minimal media plate?
