Question

Choose the correct statement with respect to 'replicon'.

• A. Replicon is always around 35 base pair away from the ori site
• B. It is a unit of distance between genes
• C. Replicons can be linear or circular
• D. Replicon model was first established in eukaryotes

Answer 1

The correct option is C Replicons can be linear or circular

DNA replication does not start from random locations but at particular sites called the origin of replication sites. Replicon refers to the unit of DNA replication and not strictly the distance between the genes. The replicon model was formulated originally in 1963 by studying the process in E.coli cells and not in eukaryotes.
Each replicon contains a specific DNA sequence where DNA replication starts. Replicon can be linear or circular. Prokaryotic replicons are usually circular.