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DNA Structure and Replication

DNA Structure and Replication
The DNA is negatively super coiled, complexes to histone,

All of these
HU
HSP-1
H-NS

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DNA Structure and Replication
DNA can be sequenced by the

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

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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
60 to 80°C
80 to l00°C
70 to 90°C

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

helix frequency
twisting number
none of these
linking number

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DNA Structure and Replication
DNA helicase is used to

unwind the double helix
interact the double helix closely
break a phosphodiester bond in DNA strand
None of these

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DNA Structure and Replication
An enzyme that recognizes foreign DNA, and results in a cut in that DNA is called

restriction endonuclease
transposase
reverse transcriptase
helicase

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