DNA replication DNA biosynthesis is only part of this process. See also the biological process terms 'DNA-dependent DNA replication ; GO:0006261' and 'RNA-dependent DNA replication ; GO:0006278'. GO:0006260 GO:0055133 MIPS_funcat:10.01.03 The cellular metabolic process in which a cell duplicates one or more molecules of DNA. DNA replication begins when specific sequences, known as origins of replication, are recognized and bound by initiation proteins, and ends when the original DNA molecule has been completely duplicated and the copies topologically separated. The unit of replication usually corresponds to the genome of the cell, an organelle, or a virus. The template for replication can either be an existing DNA molecule or RNA. Wikipedia:DNA_replication biological_process biological_process