DNA Sequencing, Mutation and Repair Which of the following mutations arise without exposure to external agents? Induced mutations None of these Spontaneous mutations Analogous mutations Induced mutations None of these Spontaneous mutations Analogous mutations 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? New strands do not contain cytosine bases New strands are methylated while old strands are not New strands are lower in molecular size Old strands are methylated while new strands are not New strands do not contain cytosine bases New strands are methylated while old strands are not New strands are lower in molecular size Old strands are methylated while new strands are not ANSWER DOWNLOAD EXAMIANS APP
DNA Sequencing, Mutation and Repair Frame shift mutation may occur as a result of 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 deamination of cytosine to uracil ANSWER DOWNLOAD EXAMIANS APP
DNA Sequencing, Mutation and Repair Which of these mechanisms for thymine dimers repair lead to mutations? Photoreactivation SOS repair Excision repair Never leads to mutation Photoreactivation SOS repair Excision repair Never leads to mutation ANSWER DOWNLOAD EXAMIANS APP
DNA Sequencing, Mutation and Repair A nonsense mutation may result into modification of mRNA a large deletion within the reading frame of a gene an abnormal elongation of a polypeptide a premature termination of the synthesis of a polypeptide modification of mRNA a large deletion within the reading frame of a gene an abnormal elongation of a polypeptide a premature termination of the synthesis of a polypeptide ANSWER DOWNLOAD EXAMIANS APP
DNA Sequencing, Mutation and Repair When mutations involve vital functions so that the mutants are nonviable, it is a lethal mutation none of these transversion nonsense mutation lethal mutation none of these transversion nonsense mutation ANSWER DOWNLOAD EXAMIANS APP
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