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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?

SOS repair
Photoreactivation
Never leads to mutation
Excision repair

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DNA Sequencing, Mutation and Repair
Which of the following(s) is/are steps in excision repair mechanisms?

Incision
Excision
All of these
Ligation

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

photoreactivation
photosynthesis
excision repair
phosphorylation

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DNA Sequencing, Mutation and Repair
Changes in which of the following characterizes mutations?

None of these
Both (a) and (b)
Genotype
Phenotype

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

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

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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
shorten the length of the protein encoded by the gene
have no effect on the transcript or protein made

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