Bio-Chemistry (M.Phil./Ph.D.) 2016 Panjab University Entrance Exam With Answers

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12.

The linking number in a relaxed DNA molecule is 200. If four turns are removed from this molecule linking number changes to 198. What would be the super helical density (σ) of such molecule

A: -0.02
B: +0.02
C: -0.0204
D: +0.0204

The answer is: A

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