tandem regions of replication in a chromosome, each about 30m long, derived from an origin of replication. By definition a replicon must contain an origin of replication, any genetic element (bacterial chromosome, virus genome, plasmid) that behaves as an autonomous unit of replication, DNA osa, mis on võimeline replitseeruma ; replikatsioon - nt DNA kaksikahela kahestumine sel teel, et kummagi ahela paariliseks sünteesitakse sellele komplementaarne ahel