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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

phosphorylation
photoreactivation
excision repair
photosynthesis

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DNA Sequencing, Mutation and Repair
A nonsense mutation introduced into the DNA sequence of a gene may

shorten the length of the protein encoded by the gene
have no effect on the transcript or protein made
cause a shift in reading frame
cause premature termination of the mRNA

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

nonsense mutation
transversion
lethal mutation
none of these

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

nonsense mutation
frameshift mutation
all of these
missense mutation

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

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

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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
cytosine at start
different radioactive tag
distinctive fluorescent tag

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