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DNA Sequencing, Mutation and Repair

DNA Sequencing, Mutation and Repair
When mutations involve vital functions so that the mutants are nonviable, it is a

nonsense mutation
lethal mutation
transversion
none of these

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DNA Sequencing, Mutation and Repair
Which of the following mutation affects only a single nucleotide?

Regional mutation
Aerial mutation
Point mutation
Site mutation

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DNA Sequencing, Mutation and Repair
Differentiation of four different bases in automated sequencing systems is that each base has

distinctive fluorescent tag
cytosine at start
different radioactive tag
unique antibody bound to it

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DNA Sequencing, Mutation and Repair
Which of the following mutations arise without exposure to external agents?

Spontaneous mutations
None of these
Analogous mutations
Induced mutations

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DNA Sequencing, Mutation and Repair
A nonsense mutation may result into

an abnormal elongation of a polypeptide
modification of mRNA
a large deletion within the reading frame of a gene
a premature termination of the synthesis of a polypeptide

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

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

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