An inactive repressor produced by a regulator gene that does not block the operator site in the tryptophan operon is called:

What does the $i$ gene encode in the $lac$ operon?

In the $lac$ operon,which gene is responsible for coding the repressor protein?

At what level does gene expression not occur?

Identify the $INCORRECT$ statement with reference to the regulation of gene expression.

In eukaryotes,the regulation of gene expression could be exerted at $:-$
$(I)$ Transcriptional level (formation of primary transcript)
$(II)$ Processing level (regulation of splicing)
$(III)$ Transport of $\text{mRNA}$ from nucleus to the cytoplasm
$(IV)$ Translational level
Choose the correct order for given statements $:-$