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DNA Structure and Replication

DNA Structure and Replication
DNA can be sequenced by the

both (a) and (b)
physical method
chemical method
chain termination procedure

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DNA Structure and Replication
Who's X-ray work aided Watson and Crick in their discovery of the double helix?

R. Franklin
L. Pauling
Leaderberg
W.H. Bragg

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DNA Structure and Replication
Enzyme, responsible for proofreading base pairing is

DNA polymerase
DNA ligase
Telomerase
Primase

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DNA Structure and Replication
What is the range of melting point temperatures (Tm) for most DNA molecules?

80 to l00°C
70 to 90°C
50 to 60°C
60 to 80°C

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DNA Structure and Replication
In DNA double helix, the two DNA chains are held together by

ionic bonds between the pair of bases
hydrogen bonds between the pair of bases
None of these
covalent bonds between the pair of bases

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DNA Structure and Replication
Which of the following is an active site on its single polypeptide chain for DNA Polymerase I?

All of these
3' → 5' exonuclease
5' → 3' polymerase
5' → 3' exonuclease

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