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It is now possible to very quickly map the genome of an organism or virus.

A) True
B) False

Correct Answer

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Viruses are often used as cloning hosts in recombinant DNA methods.

A) True
B) False

Correct Answer

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What is the evolutionary advantage of bacteria producing restriction endonucleases?


A) Bacteria use these enzymes to attack other bacteria and destroy their DNA.
B) They make these enzymes for humans to use in manipulating DNA.
C) These enzymes are a defensive measure of bacteria to defend themselves against invading DNA of bacteriophages.
D) Bacteria use these enzymes to repair their own mistakes made during DNA replication.

E) B) and D)
F) A) and C)

Correct Answer

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