has part has part DNA metabolic process DNA replication biological_process Reactome:R-HSA-176187 GO:0006260 Wikipedia:DNA_replication GO:0055133 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 the origin recognition complex, 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. 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'. Reactome:R-HSA-69239 DNA biosynthetic process