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DNA Sequencing, Mutation and Repair

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

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

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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
different radioactive tag
unique antibody bound to it
cytosine at start

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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 a shift in reading frame
shorten the length of the protein encoded by the gene
cause premature termination of the mRNA

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DNA Sequencing, Mutation and Repair
Genetic variations are

stable
influenced by the environment
not heritable
temporary

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DNA Sequencing, Mutation and Repair
The mutation which will not affect the length of a protein is,

all of these
missense mutation
nonsense mutation
frameshift mutation

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