DNA Sequencing, Mutation and Repair A mutagen is defined as a chemical or physical agent that induces mutations an enzyme that repairs mutations a molecule which stabilizes DNA thus prevents mutations from occurring an inhibitor of gene modification a chemical or physical agent that induces mutations an enzyme that repairs mutations a molecule which stabilizes DNA thus prevents mutations from occurring an inhibitor of gene modification 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 Due to which of the following DNA repair mechanisms, one is able to distinguish newly synthesized DNA strands from older one? Old strands are methylated while new strands are not New strands are methylated while old strands are not New strands do not contain cytosine bases New strands are lower in molecular size Old strands are methylated while new strands are not New strands are methylated while old strands are not New strands do not contain cytosine bases New strands are lower in molecular size ANSWER DOWNLOAD EXAMIANS APP
DNA Sequencing, Mutation and Repair When mutations involve vital functions so that the mutants are nonviable, it is a transversion none of these lethal mutation nonsense mutation transversion none of these lethal mutation nonsense mutation 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 a bacterial promoter the natural promoter of the gene being cloned expressed both in bacteria and mammalian cells not a regulated promoter a bacterial promoter the natural promoter of the gene being cloned expressed both in bacteria and mammalian cells ANSWER DOWNLOAD EXAMIANS APP
DNA Sequencing, Mutation and Repair Which of the following mutation affects only a single nucleotide? Aerial mutation Site mutation Regional mutation Point mutation Aerial mutation Site mutation Regional mutation Point mutation ANSWER DOWNLOAD EXAMIANS APP
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