DNA Replication Video

 
Hsien-Hsien Lei found this video of DNA replication [DNA Video: Molecular Visualization of DNA Replication]. It looks pretty accurate to me. The replication complex of proteins forms a molecular machine at the replication fork and it copies both strands of the parent DNA. The lagging strand has to be replicated in the opposite direction and that's what give rise to the large loops that are formed and then released.