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

Answer»

If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true butreason is notthe correct explanation of assertion
If assertion is true but reason is false
if both assertion and reason are false.

Solution :(d): An operon is a PART of genetic material (or DNA) which acts as a SINGLE regualted unit havingone or more STRUCTURAL GENES , an operator gene, a promoter gene,aregulator gene, a repressor and inducer or corepressor (from outside). Lac operon is an inducibleopera. An inducible operon system is a regulatedunit of genetic material which is switched on in response to the presnce of a chemcial.


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