Q. Which of the following reactions is required for proofreading during DNA replication by DNA polymerase III?

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Q. Which of the following enzymes remove supercoiling in replicating DNA ahead of the replication fork?

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Q. DNA unwinding is done by

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Q. Which of the following enzymes is the principal replication enzyme in E. coli?

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Q. The enzyme used to join bits of DNA is

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Q. If the mutation has a negligible effect on the function of a gene, it is known as a

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Q. Which of the following mechanisms will remove uracil and incorporate the correct base?

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Q. Which of the following has the self-repairing mechanisms?

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Q. The function of enzyme involved in base excision repair is

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Q. The DNA polymerase involved in base excision repair is

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Q. An alteration in a nucleotide sequence that changes a triplet coding for an amino acid into a termination codon is

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Q. A point mutation that replaces a purine with another purine, or a pyrimidine with another pyramidine

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Q. The enzyme of E.coli is a nuclease that initiates the repair of double stranded DNA breaks by homologous recombination

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Q. Recombinational repair is often due to

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Q. The enzyme photolyase is used in what method of repair?

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Q. Which of the following involves remarkable capacity of short segment of DNA to move from one place to another?

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Q. Which of the following process occurs between DNA molecules of very similar sequences?

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Q. Which of the following process occurs in regions where no large –scale sequence similarity is apparent?

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Q. Which of the following process generates a new copy of the transposable element at a new location of DNA?

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Q. Which of the following occurs between particular short sequences present on otherwise dissimilar parental molecules?

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