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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?

None of these
Spontaneous mutations
Analogous mutations
Induced mutations

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

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

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

all of these
frameshift mutation
missense mutation
nonsense mutation

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DNA Sequencing, Mutation and Repair
Genetic variations are

not heritable
temporary
stable
influenced by the environment

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DNA Sequencing, Mutation and Repair
Differentiation of four different bases in automated sequencing systems is that each base has

distinctive fluorescent tag
different radioactive tag
cytosine at start
unique antibody bound to it

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

lethal mutation
nonsense mutation
transversion
none of these

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