In $DNA$,the complementary bases are

  • A
    adenine and guanine; thymine and cytosine
  • B
    uracil and adenine; cytosine and guanine
  • C
    adenine and thymine; guanine and cytosine
  • D
    adenine and thymine; guanine and uracil

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The nitrogenous base which differentiates $DNA$ from $RNA$ is:

In the sugar that differentiates $RNA$ from $DNA$,the presence or absence of the $-OH$ group occurs at which carbon atom?

Identify the nitrogen atom of a purine base that bonds with the $1^{\prime}$ carbon of ribose to form a ribonucleoside.

Who proposed the double-helix structure of $DNA$?

The double helical structure of $DNA$ was proposed by

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