part_of eukaryotic DNA replication pathway mitochondrial DNA replication pathway 2015-09-24T13:02:10Z Mitochondria contain their own DNA. Human mtDNA is a small, circular molecule that resides in the matrix and, depending on cell type, can exist as a few to several thousands copies. mtDNA has its own replicative machinery. PW:0001957 mitochondrial DNA replication mtDNA replication pathway pathway vpetri mitochondria homeostasis pathway