Which statement correctly describes how replication forks proceed on circular prokaryotic chromosomes?
Show answer and explanation
Correct answer: Replication proceeds bidirectionally from a single origin
In prokaryotes, replication starts at a single origin of replication and proceeds bidirectionally, creating two replication forks that copy the circular chromosome until completion.
Keep practicing
More DNA Structure and Replication questions
- Which model correctly describes how DNA replication conserves parental strands during duplication?
- Which enzyme is responsible for unwinding the DNA double helix at the replication fork by breaking hydrogen bonds between base pairs?
- Why must DNA replication be initiated with a primer rather than directly by DNA polymerase?
- What distinguishes leading-strand synthesis from lagging-strand synthesis during DNA replication?
- Which enzyme joins Okazaki fragments on the lagging strand to create a continuous DNA strand?
- Which of the following proteins stabilize single-stranded DNA during replication to prevent re-annealing or degradation?