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DNA SEQUENCING, MUTATION AND REPAIR

DNA Sequencing, Mutation and Repair
Which of these mechanisms for thymine dimers repair lead to mutations?

Excision repair
Never leads to mutation
Photoreactivation
SOS repair

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DNA Sequencing, Mutation and Repair
Frame shift mutation may occur as a result of

formation of a thymine-dimer
deamination of cytosine to uracil
None of these
conversion of guanine to xanthine

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

photosynthesis
excision repair
phosphorylation
photoreactivation

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

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

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

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