DNA Sequencing, Mutation and Repair
A nonsense mutation introduced into the DNA sequence of a gene may

cause premature termination of the mRNA
have no effect on the transcript or protein made
shorten the length of the protein encoded by the gene
cause a shift in reading frame

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DNA Sequencing, Mutation and Repair
A mutagen is defined as

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

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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 whether a bacteria will be gram-positive or gram-negative
obtain a tentative identification of a new microorganism
predict the pulsed field gel pattern of a microorganism

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