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The enzyme responsible for the removal of supercoiling in replicating DNA ahead of the replication fork is ____________

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The enzyme responsible for the removal of supercoiling in replicating DNA ahead of the replication fork is ____________

(a) Topoisomerase

(b) Primase

(c) DNA polymerase

(d) Helicase

The question was posed to me in examination.

My query is from DNA Supercoiling in division Genes and Chromosomes of Biochemistry

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Correct option is (a) Topoisomerase

For explanation I would say: The enzymes that increase or decrease the extent of DNA under-winding are topoisomerases.

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