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DNA Sequencing, Mutation and Repair

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

Incision
Excision
All of these
Ligation

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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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DNA Sequencing, Mutation and Repair
A nonsense mutation introduced into the DNA sequence of a gene may

have no effect on the transcript or protein made
cause premature termination of the mRNA
cause a shift in reading frame
shorten the length of the protein encoded by the gene

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

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

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

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

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DNA Sequencing, Mutation and Repair
Differentiation of four different bases in automated sequencing systems is that each base has

unique antibody bound to it
cytosine at start
different radioactive tag
distinctive fluorescent tag

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