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DNA Sequencing, Mutation and Repair

DNA Sequencing, Mutation and Repair
Genetic variations are

not heritable
stable
temporary
influenced by the environment

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

nonsense mutation
all of these
frameshift mutation
missense mutation

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

Regional mutation
Point mutation
Aerial mutation
Site mutation

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

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

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DNA Sequencing, Mutation and Repair
The promoter on an expression vector used to overproduce proteins in bacteria is

not a regulated promoter
a bacterial promoter
expressed both in bacteria and mammalian cells
the natural promoter of the gene being cloned

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

photoreactivation
photosynthesis
phosphorylation
excision repair

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