UNIDIRECTIONAL REPUCATION 12.2 Origins can be mapped by autoradiography Replication fork and N electrophoresis 八AMmA Parental DNA\ Figure 12.2 Replicons BIDIRECTIONAL REPLICATION may be unidirectional or bidirectional depending on whether one or two replication Replication fork Replication fork forks are formed at the origin A 入 请莘大Figure 12.2 Replicons may be unidirectional or bidirectional, depending on whether one or two replication forks are formed at the origin. 12.2 Origins can be mapped by autoradiography and electrophoresis