Assertion :Lac operon is a repressible operon. Reason: The product of gene activity stops the activity of the said gene.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is D Both Assertion and Reason are incorrect
An operon is a part of genetic material (or DNA) which acts as a single regulated unit having one or more structural genes, an operator gene, a promoter gene, a regulator gene, a repressor, and inducer or corepressor (from outside). Lac operon is an inducible operon. An inducible operon system is a regulated unit of genetic material which is switched on in response to the presence of a chemical.
So, the correct answer is 'Both Assertion and Reason are incorrect'.

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