DNA Sequencing, Mutation and Repair A mutagen is defined as 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 a chemical or physical agent that induces 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 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 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 ANSWER DOWNLOAD EXAMIANS APP
DNA Sequencing, Mutation and Repair What was the first eukaryotic chromosome to be sequenced? Arabidopsis chromosome IV Yeast chromosome III None of these Yeast chromosome XI Arabidopsis chromosome IV Yeast chromosome III None of these Yeast chromosome XI 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
DNA Sequencing, Mutation and Repair Frame shift mutation may occur as a result of formation of a thymine-dimer None of these deamination of cytosine to uracil conversion of guanine to xanthine formation of a thymine-dimer None of these deamination of cytosine to uracil conversion of guanine to xanthine ANSWER DOWNLOAD EXAMIANS APP
DNA Sequencing, Mutation and Repair A nonsense mutation introduced into the DNA sequence of a gene may cause premature termination of the mRNA 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 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 ANSWER DOWNLOAD EXAMIANS APP
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