Which of the Following is a Characteristic of Replication of the E.coli

Question

Which of the following is a characteristic of replication of the E.coli circular chromosome?
A)Replication is unidirectional.
B)It initiates at a random position.
C)The unwinding of the duplex DNA is driven by the translocation of the DNA polymerase.
D)Torsional stress introduced in the duplex DNA is relieved by DNA gyrase.

Accepted Answer

Torsional stress introduced in the duplex DNA during replication is relieved by DNA gyrase. Replication in E.coli is bidirectional as it initiates at a defined origin, and the unwinding of the duplex DNA is not driven by the translocation of the DNA polymerase, but by the activity of helicase.