On the contrary, in eukaryotes the polyribosomes are formed in the cytoplasm after the completion of the synthesis of mRNA chains and their processing in the nucleus.

Do polyribosomes form in eukaryotes?

In eukaryotes, polyribosomes are attached to the surface of the rough endoplasmic reticulum and the outer membrane of the nucleus; in bacteria they are found free in the cytoplasm.

Do polyribosomes occur in prokaryotes?

Prokaryotic. Bacterial polysomes have been found to form double-row structures. In this conformation, the ribosomes are contacting each other through smaller subunits. These double row structures generally have a “sinusoidal” (zigzag) or 3-D helical path.