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प्रश्न
Give a reason for the following observations:
The two strands in DNA are complementary to each other.
उत्तर
Because hydrogen bonds occur between certain pairs of bases, the two strands of DNA are complementary to each other. Adenine and thymine form hydrogen bonds, but cytosine and guanine form hydrogen bonds.
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संबंधित प्रश्न
Give balanced equations for the following reactions:
Name the nitrogen base residues present in DNA
Name the purine bases and pyrimidine bases present in RNA and DNA.
Which one of them is not a protein?
In both DNA and RNA, heterocyclic base and phosphate ester linkages are at ____________.
Which of the following bases is not present in DNA?
Write the structures of fragments produced on complete hydrolysis of DNA. How are they linked in DNA molecule? Draw a diagram to show pairing of nucleotide bases in double helix of DNA.
Which of the following is not a protein?
Purine derivative among the following bases is ______.
Mention two important functions of nucleic acids.
Assertion (A): The backbone of DNA and RNA molecules is a chain consisting of heterocyclic base, pentose sugar and phosphate group.
Reason (R): Nucleotides and nucleosides mainly differ from each other in the presence of phosphate group.
