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Molecular Basis...

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  • Question 1
    4 / -1

    Which of the following pairs is incorrectly matched?

  • Question 2
    4 / -1

    Choose the correct answer from the alternatives given :
    Given figure represents the DNA double helix model is proposed by Watson and Crick (1953). Select the option that shows correct measurements of A, B and C.
    image

  • Question 3
    4 / -1

    Refer the given figure of nucleosome and select the option that correctly identifies the parts A, B and C.

  • Question 4
    4 / -1

    If a double stranded DNA has 20% of cytosines, calculate the percent of adenine in the DNA.

  • Question 5
    4 / -1

    Refer to the given sequence of steps and select the correct option.

  • Question 6
    4 / -1

    If the sequence of bases in one strand of DNA is ATGCATGCA, what would be the sequence of bases on complementary strands?

  • Question 7
    4 / -1

    Read the following statements and select the Correct option.
    (i) Loosely packed and lightly stained region of chromatin are called as heterochrormatin.
    (ii) Densely packed and dark stained region of chromatin are called as euchromatin.
    (iii) A typical nucleosome contains 200 bp of DNA helix.

  • Question 8
    4 / -1

    Chemically, RNA is (i) reactive and (ii) stable as compared to DNA.

  • Question 9
    4 / -1

    In a DNA strand, the nucleotides are linked together by

  • Question 10
    4 / -1

    Which of the following shows the correct positions of the phosphate (P), sugar (S) and base (B) molecules in the given line diagrams representing the structure of DNA 

  • Question 11
    4 / -1

    What does A and B represent in the given representation in the Diagram?

  • Question 12
    4 / -1

    In one polynucleotide strand of a DNA molecule, the ratio of A+T/G+C is 0.3. what is the A +G/T +C ratio of the entire DNA molecule?

  • Question 13
    4 / -1

    The structure in chromatin seen as 'beads-on' string' when viewed under electron microscope are called

  • Question 14
    4 / -1

    Choose the correct answer from the alternatives given :
    If the DNA of a virus is labelled with 32P and the protein of the virus is labelled with 355, after transduction which molecule(s) would be present inside the bacterial cells?

  • Question 15
    4 / -1

    Choose the correct answer from the alternatives given:
    The year 2003 was celebrated as the 50th anniversary of discovery of

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