36. E.coli DNA polymerases II and III lack

A. 5′ → 3′ exonuclease activity
B. 5′ → 3′ endonuclease activity
C. partially 5′ → 3′ exonuclease activity
D. partially 5′ → 3′ endonuclease activity

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37. In sperm heads, DNA is particularly highly condensed and the histones are replaced with small basic protein called

A. protamines
B. purines
C. pyrimidines
D. all of the above

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38. Okazaki fragments occur during

A. transformation
B. replication
C. polymerase reaction
D. synthesis

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39. DNA can be sequenced by the

A. chemical method
B. chain termination procedure
C. both (a) and (b)
D. physical method

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40. Which histone(s) are associated with the linker DNA of a nucleosome?

A. Histone H1
B. Histones H2A and H2B
C. Histone H3
D. Histone H4

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