What forms the backbone of a polynucleotide chain?

What forms the backbone of a polynucleotide chain?
  1. Nitrogenous bases
  2. Sugar moiety
  3. Phosphates
  4. Sugar and phosphates

Solution

The backbone of a polynucleotide chain is formed due to sugar and phosphates, while the nitrogenous bases linked to the sugar moiety project from the backbone.

Asked in: NCERT

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