DNA Sequencing, Mutation and Repair A mutagen is defined as a chemical or physical agent that induces mutations an enzyme that repairs mutations an inhibitor of gene modification a molecule which stabilizes DNA thus prevents mutations from occurring a chemical or physical agent that induces mutations an enzyme that repairs mutations an inhibitor of gene modification a molecule which stabilizes DNA thus prevents mutations from occurring 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 are lower in molecular size New strands do not contain cytosine bases Old strands are methylated while new strands are not New strands are methylated while old strands are not New strands are lower in molecular size New strands do not contain cytosine bases ANSWER DOWNLOAD EXAMIANS APP
DNA Sequencing, Mutation and Repair Frame shift mutation may occur as a result of deamination of cytosine to uracil formation of a thymine-dimer conversion of guanine to xanthine None of these deamination of cytosine to uracil formation of a thymine-dimer conversion of guanine to xanthine None of these ANSWER DOWNLOAD EXAMIANS APP
DNA Sequencing, Mutation and Repair Thymine dimers are directly repaired with the help of visible light by process known as photoreactivation phosphorylation excision repair photosynthesis photoreactivation phosphorylation excision repair photosynthesis ANSWER DOWNLOAD EXAMIANS APP
DNA Sequencing, Mutation and Repair The mutation which will not affect the length of a protein is, frameshift mutation nonsense mutation missense mutation all of these frameshift mutation nonsense mutation missense mutation all of these ANSWER DOWNLOAD EXAMIANS APP
DNA Sequencing, Mutation and Repair A nonsense mutation may result into modification of mRNA a premature termination of the synthesis of a polypeptide a large deletion within the reading frame of a gene an abnormal elongation of a polypeptide modification of mRNA a premature termination of the synthesis of a polypeptide a large deletion within the reading frame of a gene an abnormal elongation of a polypeptide ANSWER DOWNLOAD EXAMIANS APP
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