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  • Write the different components of a lac-operon in E. coli. Explain its expression while in an ‘open’ state.        

Write the different components of a lac-operon in E. coli. Explain its expression while in an ‘open’ state.

 

 

 

 
 
 
 
 

Answers (1)

It is consists of one regulatory-gene, promoter gene, operator gene, and three structural genes (z, y, a).

Lactose/inducer binds to the repressor protein, makes it inactive so it cannot bind with the operator, allows RNA Polymerase access to the promotor and transcription proceeds, \beta-galactosidase, permease, transacetylase formed.

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Priyanka Kumari

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