CBSE  /  Class 12  /  Biology  /  Molecular Basis of Inheritance

  • 1. 
    Transposons occur in:

  • In Eukaryotes
  • In Prokaryotes
  • In both (a) and (b)
  • None of these

  • 2. 
    One of these is not prepared directly from DNA

  • m-RNA
  • f-RNA
  • r-RNA
  • Protein

  • 3. 
    Coiling of DNA duplex is:

  • Left-handed
  • Right-handed
  • Parallel
  • All of these

  • 4. 
    DNA double helix model was given by:

  • Knoll and Ruska
  • Khorana
  • Watson and Crick
  • Priestley

  • 5. 
    Inprokaryotic translation, GTP molecule required in at:

  • Formation of formyl-met-f-RNA
  • Joining of 30S sub-unit of ribosome with n-RNA
  • Joining of 30S m-RNA on Formyl-met-f-RNA
  • Joining of 50S subunit of ribosome with initiation complex

  • 6. 
    DNA transcription, if nucleotide sequence of DNA strand, that is being coded in ATACG, then the nucleotide sequence in m-RNA would be:

  • UATGC
  • TATGC
  • TCTGG
  • UAUGC

  • 7. 
    In a m-RNA, how many nucleotide sequence code for amino acid:

  • One
  • Two
  • Three
  • Four

  • 8. 
    RNA from which has clover leaf model:

  • f-RNA
  • r-RNA
  • hn-RNA
  • m-RNA

  • 9. 
    Nitrogenous bases present in DNA:

  • Adenine, guanine, cytosine, thymine
  • Adenine, guanine, cytosine, uracil
  • Adenine, thymine, uracil
  • Guanine, uracil
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