The presence or absence of a hydroxyl group on which carbon atom of the sugar differentiates $RNA$ and $DNA$?

  • A
    $1^{st}$
  • B
    $2^{nd}$
  • C
    $3^{rd}$
  • D
    $4^{th}$

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Codon is present in

The total number of hydrogen bonds in a $DNA$ double helix strand,where one strand has the following sequence of bases,is $...........$
$5^{\prime}-G-G-C-A-A-A-T-C-G-G-C-T-A-3^{\prime}$

Which of the following represents the simplified version of a nucleoside?

Identify the nitrogenous base of nucleic acid from the following that has a double-ring structure.

Which of the following is not present in nucleic acids?

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