. Rolling circle has basically five steps. 1. DNA will be "nicked". 2. 3' end elongated using "unnicked" DNA as leading strand ; 5' end displaced 3. Displaced dNA is lagging strand and is made double stranded using Okazaki fragments. 4. Replication of both "unnicked" and displaced DNA completed 5. Displaced DNA circularizex Rolling circle replication describes a process of unidirectional nucleic acid replication that can rapidly synthesize multiple copies of circular molecules of DNA or RNA, such as plasmids, the genomes of bacteriophages, and the circular RNA genome of viroids. Some eukaryotic virusesc also replicate their DNA via a rolling circle mechanism.