In both $DNA$ and $RNA$, heterocyclic base and phosphate ester linkages are at
  • A${C'_5}$ and ${C'_2}$ respectively of the sugar molecule
  • B${C'_2}$ and ${C'_5}$ respectively of the sugar molecule
  • C${C'_1}$ and ${C'_5}$ respectively of the sugar molecule
  • D${C'_5}$ and ${C'_1}$ respectively of the sugar molecule
AIEEE 2005, Difficult
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