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 Assertion: Topoisomerase is required for relieving the supercoiling tension in DNA during replication.

Reason: Topoisomerase cuts the DNA strands and re-joins them to relieve the supercoiling tension caused by the unwinding of the double helix during DNA replication.

Option: 1

Both assertion and reason are true, and the reason is the correct explanation of the assertion.


Option: 2

Both assertion and reason are true, but the reason is not the correct explanation of the assertion.


Option: 3

 The assertion is true, but the reason is false.


Option: 4

The assertion is false, but the reason is true.


Answers (1)

best_answer

The Assertion is true, as topoisomerase is responsible for relieving the supercoiling tension that arises during DNA replication. It does this by cutting the DNA strands and re-joining them in a relaxed state. The Reason is also true, as this is the mechanism by which topoisomerase works to relieve the supercoiling tension.

Option 1  is the correct answer. 

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manish

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