A nucleoside differs from a nucleotide in not having

  • A

    Phosphate

  • B

    Sugar

  • C

    Nitrogen base

  • D

    Phosphate and sugar

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Which one of the following is not applicableto $RNA$ ?

  • [NEET 2015]

What is the type of coiling in $DNA$

Assertion : Histones are basic proteins of major importance in packaging of eukaryotic $DNA$. $DNA$ and histones comprise chromatin forming the bulk of eukaryotic chromosome.

Reason : Histones are of five major types $H_1,\,H_2A\,, H_2B,H_3$ and $H_4$ .

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The figure gives an important concept in the genetic implication of $DNA$. Fill the blanks $A, B$ and $C$.

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The central dogma of protein synthesis is