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DNA Sequencing, Mutation and Repair

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

Analogous mutations
Induced mutations
Spontaneous mutations
None of these

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

Point mutation
Aerial mutation
Site mutation
Regional mutation

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

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

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

lethal mutation
nonsense mutation
none of these
transversion

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DNA Sequencing, Mutation and Repair
Thymine dimers are directly repaired with the help of visible light by process known as

excision repair
phosphorylation
photoreactivation
photosynthesis

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

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

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