The $3^{\prime}-5^{\prime}$ phosphodiester linkages inside a polynucleotide chain serve to join

The $3^{\prime}-5^{\prime}$ phosphodiester linkages inside a polynucleotide chain serve to join
  1. one DNA strand with the other DNA strand
  2. one nucleoside with another nucleoside
  3. one nucleotide with another nucleotide
  4. one nitrogenous base with pentose sugar

Solution

In a polynucleotide chain, $3^{\prime}-5^{\prime}$ phospho diester bond is formed between carbon 3 of one nucleotide and carbon 5 of the other nucleotide, ie, it serves to join one nucleotide with another nucleotide in a polynucleotide chain.

Asked in: NEET 2010 (Mains)

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