DNA Sequencing, Mutation and Repair Which of the following mutations arise without exposure to external agents? Spontaneous mutations Induced mutations Analogous mutations None of these Spontaneous mutations Induced mutations Analogous mutations None of these ANSWER DOWNLOAD EXAMIANS APP
DNA Sequencing, Mutation and Repair The promoter on an expression vector used to overproduce proteins in bacteria is not a regulated promoter the natural promoter of the gene being cloned expressed both in bacteria and mammalian cells a bacterial promoter not a regulated promoter the natural promoter of the gene being cloned expressed both in bacteria and mammalian cells a bacterial promoter ANSWER DOWNLOAD EXAMIANS APP
DNA Sequencing, Mutation and Repair Which of these mechanisms for thymine dimers repair lead to mutations? Never leads to mutation Photoreactivation SOS repair Excision repair Never leads to mutation Photoreactivation SOS repair Excision repair ANSWER DOWNLOAD EXAMIANS APP
DNA Sequencing, Mutation and Repair Frame shift mutation may occur as a result of deamination of cytosine to uracil None of these conversion of guanine to xanthine formation of a thymine-dimer deamination of cytosine to uracil None of these conversion of guanine to xanthine formation of a thymine-dimer ANSWER DOWNLOAD EXAMIANS APP
DNA Sequencing, Mutation and Repair A mutagen is defined as a molecule which stabilizes DNA thus prevents mutations from occurring an enzyme that repairs mutations a chemical or physical agent that induces mutations an inhibitor of gene modification a molecule which stabilizes DNA thus prevents mutations from occurring an enzyme that repairs mutations a chemical or physical agent that induces mutations an inhibitor of gene modification ANSWER DOWNLOAD EXAMIANS APP
DNA Sequencing, Mutation and Repair A nonsense mutation may result into a premature termination of the synthesis of a polypeptide an abnormal elongation of a polypeptide a large deletion within the reading frame of a gene modification of mRNA a premature termination of the synthesis of a polypeptide an abnormal elongation of a polypeptide a large deletion within the reading frame of a gene modification of mRNA ANSWER DOWNLOAD EXAMIANS APP
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