Class 12 NEET Biology Molecular Basis of Inheritance Questions Part 1

Ribosomes may occur in rosettes or helical groups called polyribosomes or polysomes (Gk. Poly many, soma - body). The different ribosomes of a polyribosome are connected with a 10−20Å thick strand of messenger or m RNA and its maintenance requires energy. Polyribosomes are formed during periods of active protein synthesis when a number of copies of the same polypeptide are required.