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DNA Sequencing, Mutation and Repair

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

excision repair
photosynthesis
photoreactivation
phosphorylation

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

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

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DNA Sequencing, Mutation and Repair
What was the first eukaryotic chromosome to be sequenced?

Yeast chromosome XI
Arabidopsis chromosome IV
None of these
Yeast chromosome III

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

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

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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
cytosine at start
unique antibody bound to it
distinctive fluorescent tag

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

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

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