Isolation and purification of a specific $DNA$ segment from a living organism was achieved by

  • A
    Crick
  • B
    Nirenberg
  • C
    Khorana
  • D
    Beckwith and his colleagues

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Which of the following statements is correct regarding the packaging of the $DNA$ helix?

Molecular biology is the study of .......?

Who proposed the double helix model of $DNA$?

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If a chromosome contains $2,00,000$ base pairs,how many nucleosomes will it have (in $,000$)?

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