In which crucial step of gene expression does the ribosome play a major role: transcription or translation?

Translation is the step in which ribosome play a major role.

Option 2.

Explanation:

Ribosomes' capacity is to make proteins. They do this in a procedure known as translation, which includes taking directions encoded in detachment ribonucleic corrosive (mRNA) and utilizing these to gather proteins from amino acids.

The ribosome has a small and a large sub unit and is a complex molecule composed of several ribosomal RNA molecules and a number of proteins. ... Next, the large ribosomal sub unit binds to form the complete initiation complex. During the elongation stage, the ribosome continues to translate each codon in turn.

the scientific method.