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DNA Structure and Replication

DNA Structure and Replication
What is the IUPAC code for an A, C, T ambiguity in a nucleic acid sequence?

H
None of these
S
B

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DNA Structure and Replication
Okazaki fragments occur during

synthesis
transformation
replication
polymerase reaction

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

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

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

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

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DNA Structure and Replication
DNA can be sequenced by the

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

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

none of these
twisting number
linking number
helix frequency

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