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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?

Spontaneous mutations
None of these
Analogous mutations
Induced mutations

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DNA Sequencing, Mutation and Repair
Which of the following bacterial genome was sequenced first?

S. pneumoniae
S. thermophilus
H. influenzae
E. coli

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

transversion
none of these
nonsense mutation
lethal mutation

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

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

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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
What was the first eukaryotic chromosome to be sequenced?

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

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