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DNA Structure and Replication

DNA Structure and Replication
Number of times the two DNA strands are interwined in circular DNA and is known as

helix frequency
linking number
twisting number
none of these

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DNA Structure and Replication
DNA can be sequenced by the

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

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

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

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DNA Structure and Replication
First evident that DNA is genetic material comes from the experiment of Griffith is

transduction
translation
replication
transformation

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DNA Structure and Replication
DNA replication results in

two completely new DNA molecules
two DNA molecules such that each one contains a strand of the original
one new DNA molecules 1 old molecule
one new molecule of RNA

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DNA Structure and Replication
The nicks or gaps between Okazaki fragments are eventually sealed by

DNA ligase
gyrase
RNA ligase
polymerase

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