Which of the following statements about $DNA$ is not correct?

  • A
    It has a double helix structure
  • B
    Adenine forms hydrogen bonds with thymine and cytosine forms hydrogen bonds with guanine
  • C
    The two strands in a $DNA$ molecule are not complementary to each other
  • D
    It contains the pentose sugar,$2$-deoxyribose

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What are the different types of $RNA$ found in the cell?

Which substance is not present in nucleic acid?

Among the following compounds,which one is found in $RNA$?

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

How are nucleotides linked together in nucleic acids?

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