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DNA Sequencing, Mutation and Repair

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

nonsense mutation
missense mutation
frameshift mutation
all of these

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

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
cause premature termination of the mRNA

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

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

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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
When mutations involve vital functions so that the mutants are nonviable, it is a

transversion
nonsense mutation
none of these
lethal mutation

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

Incision
Ligation
Excision
All of these

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