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DNA replication.

Image from DOE Human Genome project

This scheme is widely distributed but wrong. DNA is synthesized only in 5'->3' direction. Therefore only the so called leading strand is synthesized continously. The other one, the lagging strand, is synthesized in several Okazaki-Fragments but not continously as shown in this scheme.

Public domain This image is a work of a United States Department of Energy (or predecessor organization) employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain.

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