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DNA Sequencing, Mutation and Repair

DNA Sequencing, Mutation and Repair
Genetic variations are

not heritable
influenced by the environment
temporary
stable

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

Point mutation
Aerial mutation
Regional 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
have no effect on the transcript or protein made
shorten the length of the protein encoded by the gene

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

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

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

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

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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
photoreactivation
photosynthesis
phosphorylation

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