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Question : Assertion: DNA segments can be excised by 'molecular scissors' or 'chemical scalpels' that biotechnologists call restriction enzymes Reason: Restriction enzymes are synthesised by microbes as a defence mechanism and are specific endonucleases which can cleave double-stranded DNA.

Answer»

If both ASSERTION and REASON are true and the Reason is the correct EXPLANATION of the Assertion.
If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion.
If Assertion is true but the Reason is FALSE.
If both Assertion and Reason are false.

Answer :A


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