Question

At how many levels can gene regulation occur in eukaryotes?

Options

• 1 level at the transcriptional stage only

• 5 levels including DNA rearrangements, RNA processing, and translational control

• 2 levels: transcriptional and translational only

• 10 levels across all cellular compartments

Answer 1

Regulation in eukaryotes occurs at multiple levels: Transcriptional (formation of primary transcript), Processing (regulation of splicing), Transport (movement of mRNA from nucleus to cytoplasm), Translational (control at protein-synthesis stage), and additional control points including DNA rearrangements, RNA processing, mRNA stability, and translational control.