could someone explain to me about this? thank you so much! What is the function

Question

could someone explain to me about this? thank you so much!

What is the function of lacl in the regulation of the lac operon? O It is a structural gene that encodes permease. It encodes a repressor that, in the absence of lactose, binds to the lac operator and blocks expression of the structural genes. It is the operator that mediates the transcription of the structural genes. It is the promoter that mediates the transcription of the operon. It encodes a repressor that, in the presence of lactose, binds to the lac operator and blocks expression of the structural genes O O

Explanation / Answer

1. It encodes a repressor that, in absense of lactose binds to lac operator and blocks expression of the structural genes.

lac I gene is the regulatory gene that codes for lac repressor protein.

2. ubiquitination of proteins

RNA interference or RNAi does not ubiquitinate proteins. It helps in the regulation of gene expression.

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