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DNA Sequencing, Mutation and Repair

DNA Sequencing, Mutation and Repair
Genetic variations are

influenced by the environment
stable
not heritable
temporary

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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
cytosine at start
different radioactive tag
unique antibody bound to it

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

Excision
All of these
Incision
Ligation

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DNA Sequencing, Mutation and Repair
Which of the following mutation affects only a single nucleotide?

Aerial mutation
Point mutation
Regional mutation
Site 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
SOS repair
Excision repair
Photoreactivation

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DNA Sequencing, Mutation and Repair
Frame shift mutation may occur as a result of

formation of a thymine-dimer
conversion of guanine to xanthine
deamination of cytosine to uracil
None of these

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