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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
Analogous mutations
Induced mutations
Spontaneous mutations

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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
unique antibody bound to it
cytosine at start

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

transversion
lethal mutation
none of these
nonsense mutation

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DNA Sequencing, Mutation and Repair
Genetic variations are

not heritable
temporary
influenced by the environment
stable

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

nonsense mutation
all of these
missense mutation
frameshift mutation

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

Excision repair
SOS repair
Never leads to mutation
Photoreactivation

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