Q. According to Chargaff’s rule the two strands of DNA has ___________

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Q. In one strand of a double stranded DNA the rate of occurrence of A is 3 times C in consecutive 10 bases. So how many G will be there in 100 base pairs of a DNA duplex?[Consider G=T in one strand].

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Q. In a diploid organism with 30,000 bases haploid genome contains 23% A residues. What is the number of G residues in the genome of this organism?

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Q. Which of the following is not a characteristic of nucleotide bases?

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Q. Which of the following factors do not provide to the separation of DNA fragments during electrophoresis?

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Q. Which one of the following is not a function of a nucleotide?

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Q. The first X-ray diffraction patterns of DNA were taken in 1938 by ___________

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Q. In early 1950s high quality X-ray diffraction photographs of DNA suggesting the DNA being double helix and composed of two nucleotide strands. Who took those photographs?

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Q. In 1952, an unambiguous established work in the laboratory of Alexander Todd led to the discovery of _____________

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Q. What should be the complementary strand of 3’….ATGGCTTGA….5’?

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Q. The hydrogen bonds formed during A and T bonding occurs between C₆NH₂ of A and __________

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Q. In a DNA double helix the bases are held together by hydrogen bonds. These hydrogen bonds are _________

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Q. It is easy to break the bond between A and T than in between G and C.

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Q. With respect to the importance of hydrogen bonding and DNA double helix stability, which of the following statements is false?

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Q. In the late 1970s non double helical form of DNA was also suggested but was discarded on the basis of certain factors. Which of the following is not a factor responsible?

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Q. Levene investigated and found that the nucleic acid is composed of poly-nucleotides and each nucleotide is composed of one base, a sugar molecule and a phosphate. This was performed on the genome of________________

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Q. Who were the first to suggest that one strand of DNA might act as a template for the synthesis of its complementary strand?

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Q. Semiconservative nature of replication of eukaryotic chromosome was first demonstrated by _______

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Q. Watson and Crick’s suggestion of the complementary strand synthesis taking one of the parent strand as template was proposed in _________

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Q. Which of the following statements is true with respect to the DNA double helix?

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