Involved in the replication of mitochondrial DNA. a 2'-deoxyribonucleoside 5'-triphosphate + DNA(n) = diphosphate + DNA(n+1) In eukaryotes there are five DNA polymerases: alpha, beta, gamma, delta, and epsilon which are responsible for different reactions of DNA synthesis. Present with 377 molecules/cell in log phase SD medium. Belongs to the DNA polymerase type-A family.