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DNA Sequencing, Mutation and Repair

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

lethal mutation
transversion
nonsense mutation
none of these

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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
Genetic variations are

stable
not heritable
influenced by the environment
temporary

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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
What was the first eukaryotic chromosome to be sequenced?

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

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

Induced mutations
None of these
Spontaneous mutations
Analogous mutations

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