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Microbiology Exam #3
The third exam, covering gene expression, viruses, bacterial genetics and genetic engineering
8
Biology
Undergraduate 3
04/12/2009

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Cards

Term
How does shotgun sequencing work?
Definition
A piece of genetic material is blasted into many pieces so it is easier to classify.
Term
What is a plasmid
Definition
a genetic element that replicates independently from the host chromosome.
Term
What type of genetic material is usually carried on a plasmid?
Definition
DNA
Term
What are the two main classes of mutations?
Definition

A.) Selectable mutations - those that give the mutant growth advantages under certain environmental conditions

 

B.) non-selectable mutations that have neither an advantage or disadvantage over the parent

Term
what is a mutagen?
Definition
a chemical, physical, or biological agent that increases mutation rates
Term
how can replica plating be used to screen for mutation in the cell?
Definition

I.) stamp a velveteen covered block onto plate with colonies that are suspected mutants

 

II.)Stamp a full growth medium and a minimal growth medium

 

III.) only the mutants will grow on the minimal plate.

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