Complementatio n DNA Replication DNA replicates semiconservatively. Bacteria, even during logarithmic growth, have ONE map position where DNA can originate replication.
Eukaryotes have MANY origins of replication, all of which run concurrently.
In either case, each origin of replication runs bidirectionally, with TWO replicating forks. Experiment to show Semiconservative Replication Bidirectional semiconservative replication can be demonstrated by observing DNA from cells replicating in the presence of radiolabeled nucleotides. Both sides of the dividing DNA will be labeled. Molecular Steps of DNA Replication Replication of DNA is mediated by enzymes and binding proteins. To see an example, view topoisomerase I .