Q158 / 180 · NEET 2017 · Zoology

DNA fragments are

  • A
    Positively charged
  • Correct answer
    B
    Negatively charged
  • C
    Neutral
  • D
    Either positively or negatively charged depending on their size

Solution

DNA  contain phosphates in its backbone.Phosphate groups in the DNA backbone carry negatively-charged oxygen molecules responsible for the whole DNA molecule to appear negatively charged as a mild acid. So it is called a nucleic ACID, a "DN acid".

Hence, the correct answer is option: 'B'.

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