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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?

Photoreactivation
Never leads to mutation
SOS repair
Excision repair

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

Spontaneous mutations
Induced mutations
Analogous mutations
None of these

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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
cause premature termination of the mRNA
have no effect on the transcript or protein made
shorten the length of the protein encoded by the gene

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DNA Sequencing, Mutation and Repair
Genetic variations are

stable
temporary
not heritable
influenced by the environment

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

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

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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
distinctive fluorescent tag
cytosine at start
different radioactive tag

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