Microbiology

Learn the toughest concepts covered in Microbiology with step-by-step video tutorials and practice problems by world-class tutors.

16. Microbial Genetics

Mutant Detection

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concept

Mutant Detection

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Problem

Which of the following is a major difference between direct and indirect selection of mutants?

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Problem

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?

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concept

Replica Plating

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Problem

Replica plating is an example of which type of mutant selection?

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Problem

What types of bacteria will be growing on the nutrient agar and minimal media at the end of a replica plating experiment?

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Problem

Why do prototroph bacteria grow on minimal media but auxotroph bacteria do not?

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Problem

Which of the following colonies of bacteria are composed of His- auxotroph bacteria?

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Problem

What characteristics are true about the colonies living on the minimal media plate?