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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Hind II always cuts DNA molecules at a particular point by recognising a specific sequence of four base pairs. Reason (R): Hind II was the first restriction endonuclease to be isolated and its functioning depends on a specific DNA nucleotide sequence. In the light of the above statements, choose th

Options

  1. ABoth Assertion and Reason are true and Reason is the correct explanation of Assertion.
  2. BBoth Assertion and Reason are true but Reason is not the correct explanation of Assertion.
  3. CAssertion is true but Reason is false.
  4. DAssertion is false but Reason is true.

Correct answer

D. Assertion is false but Reason is true.

Step-by-step solution

Assertion (A) is false because Hind II always cuts DNA molecules at a particular point by recognising a specific sequence of six base pairs, not four base pairs. Reason (R) is true because Hind II was indeed the first restriction endonuclease to be isolated, and its functioning depends on a specific DNA nucleotide sequence. Therefore, the Assertion is false but the Reason is true. Answer: Assertion is false but Reason is true.

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