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DNA Sequencing, Mutation and Repair

DNA Sequencing, Mutation and Repair
The mutation which will not affect the length of a protein is,

all of these
nonsense mutation
frameshift mutation
missense mutation

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

Never leads to mutation
Photoreactivation
Excision repair
SOS repair

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

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

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

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

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

Analogous mutations
Induced mutations
Spontaneous mutations
None of these

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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
phosphorylation
photosynthesis
excision repair

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