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Over-twisting of a molecule results in ____________(a) Negative supercoiling(b) Positive supercoiling(c) Elongation(d) CompressionI have been asked this question in semester exam.This is a very interesting question from DNA Supercoiling topic in section Genes and Chromosomes of Biochemistry

Answer»

The CORRECT CHOICE is (b) Positive supercoiling

Explanation: Extra HELICAL twisting leads to positive supercoiling, while SUBTRACTIVE twisting leads to negative supercoiling.



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