Q. A defect in DNA repair enzymes is one of causative factors of

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Q. Spontaneous and permanent changes in DNA sequence are called

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Q. Which of following play a part in DNA synthesis?

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Q. Loose packaging of which of following makes DNA more accessible to transcription machinery?

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Q. In which of following cells activity of telomerase is abnormally high?

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Q. Complex of DNA and proteins is called

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Q. DNA helix makes one full turn after what distance along its length?

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Q. About how many enzymes participate in DNA replication?

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Q. What is diameter of DNA double helix in a eukaryotic cell?

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Q. Which of following is not a nitrogenous base of DNA?

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Q. Telomeres undergo which of following changes in each replication round?

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Q. Which of following is basic unit of DNA packaging?

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Q. Which of following bases can make dimers if they're adjacent to a DNA molecule?

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Q. Which of following enzymes joins sugar-phosphate backbone?

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Q. How many nucleotide pairs are present in DNA of a single human cell?

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Q. How many layers of base pairs is present in every turn of helix?

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Q. Telomeres typically contain which of following?

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Q. Which of following is a DNA repair system?

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Q. Purine bases have how many rings in their structure?

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Q. How many types of histones are most commonly found in chromatin?

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