Question

Length of mRNA/DNA that carries information for complete polypeptide synthesis is

• A. Cistron
• B. Operon
• C. Codon
• D. Muton

Answer 1

The correct option is A Cistron

Muton
Muton is the element of the DNA that is capable of undergoing mutation easily.

Codon
A codon is a specific sequence of 3 nucleotides on the mRNA template that codes for a specific amino acid during translation.

Operon
Operon is a coordinated group of regulatory and structural genes that function together as a unit to control the formation of multiple proteins.

Cistron
Cistron is the part of the primary mRNA transcript or DNA molecule that codes for a complete polypeptide.
In prokaryotic cells, it is made up of exons (coding segments). In eukaryotic cells it is made up of both exons and introns (non-coding segments).
Thus, the entire length of an mRNA or DNA that carries the genetic information for the synthesis of a complete polypeptide is a cistron.

Final answer
(D) Cistron