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DNA Sequencing, Mutation and Repair

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

Never leads to mutation
SOS repair
Photoreactivation
Excision repair

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

Site mutation
Point mutation
Aerial mutation
Regional mutation

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DNA Sequencing, Mutation and Repair
What was the first eukaryotic chromosome to be sequenced?

None of these
Yeast chromosome XI
Arabidopsis chromosome IV
Yeast chromosome III

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DNA Sequencing, Mutation and Repair
Changes in which of the following characterizes mutations?

None of these
Both (a) and (b)
Genotype
Phenotype

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DNA Sequencing, Mutation and Repair
Thymine dimers are directly repaired with the help of visible light by process known as

phosphorylation
excision repair
photoreactivation
photosynthesis

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