Which one of the following events does not occur during gene regulation in eukaryotes?

Replication level

The correct answer is Option (1) → Replication level

Regulation of gene expression refers to a very broad term that may occur at various levels. Considering that gene expression results in the formation of a polypeptide, it can be regulated at several levels. In eukaryotes, the regulation could be exerted at

(i) transcriptional level (formation of primary transcript),

(ii) processing level (regulation of splicing),

(iii) transport of mRNA from nucleus to the cytoplasm,

(iv) translational level.