DNA Sequencing, Mutation and Repair
The promoter on an expression vector used to overproduce proteins in bacteria is

the natural promoter of the gene being cloned
a bacterial promoter
expressed both in bacteria and mammalian cells
not a regulated promoter

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DNA Sequencing, Mutation and Repair
The DNA sequences of rRNA genes can be used to

assess relatedness of eukaryotes but not prokaryotes
predict the pulsed field gel pattern of a microorganism
predict whether a bacteria will be gram-positive or gram-negative
obtain a tentative identification of a new microorganism

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DNA Sequencing, Mutation and Repair
A mutagen is defined as

an enzyme that repairs mutations
a molecule which stabilizes DNA thus prevents mutations from occurring
a chemical or physical agent that induces mutations
an inhibitor of gene modification

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