DNA fragments are

DNA fragments are
  1. Positively charged
  2. Negatively charged
  3. Neutral
  4. 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".

Asked in: NEET 2017

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