MGA2 04-04

Schematic Diagram of DNA replication

    The old strands separate, and new bases are added to either strand according to the base pairing rules. Bases are added only at the 3' end, and the 5' end remains unmodified. That is, extension on either strand occurs only in the 5'3' direction.

Figure 2004 Griffiths et al.; all text material 2013 by Steven M. Carr