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DNA Sequencing, Mutation and Repair

DNA Sequencing, Mutation and Repair
Genetic variations are

temporary
influenced by the environment
stable
not heritable

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

excision repair
phosphorylation
photosynthesis
photoreactivation

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DNA Sequencing, Mutation and Repair
Which of the following mutations arise without exposure to external agents?

Analogous mutations
None of these
Spontaneous mutations
Induced mutations

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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
Ligation
Incision

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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
nonsense mutation
missense mutation

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

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

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