Some theories hold that its DNA is derived from a single source called "Eve".  
Since their DNA copying does not have any error checking, the probability of random mutation is much higher, leading to diseases such as Kearn-Sayre syndrome.  Its DNA typically consists of five to ten copies, all inherited from the mother, and when they divide these copies are randomly distributed between the offspring.  Some theories hold that its DNA is derived from a single source called "Eve".  FTP, what are these organelles long ago incorporated into eukaryotic cells to produce energy for them?
Since their DNA copying does not have any error checking, the probability of random mutation is much higher, leading to diseases such as Kearn-Sayre syndrome.  
mitochondria