▁circular ▁mit och ond rial ▁DNA ▁is ▁contained ▁within ▁the ▁organ elles . ▁Cont aining ▁ 3 7 ▁gen es , ▁mit och ond rial ▁DNA ▁has ▁an ▁essential ▁role ▁in ▁the ▁production ▁of ▁necessary ▁comp ounds , ▁such ▁as ▁required ▁en zym es ▁for ▁the ▁proper ▁function ▁of ▁mit och ond ria . ▁Specifically , ▁it ▁has ▁been ▁suggested ▁that ▁certain ▁gen es ▁( such ▁as ▁the ▁gen es ▁for ▁cy to chrome ▁ox id ase ▁sub un its ▁I ▁and ▁II ) ▁within ▁the ▁organ elle ▁are ▁necessary ▁to ▁reg ulate ▁re do x ▁balance ▁throughout ▁memb rane - associ ated ▁electron ▁transport ▁ch ains . ▁These ▁parts ▁of ▁the ▁mit och ond rial ▁gen ome ▁have ▁been ▁reported ▁to ▁be ▁the ▁most ▁frequently ▁employed . ▁M ito ch ond ria ▁is ▁not ▁the ▁only ▁location ▁within ▁which ▁the ▁cell ▁m t D NA , ▁mit och ond rial ▁DNA , ▁can ▁be ▁found ; ▁sometimes ▁transfer ▁of ▁mit och ond rial ▁DNA ▁from ▁organ elles ▁to ▁the ▁nucle us ▁can ▁occur ; ▁the ▁evidence ▁of ▁such ▁trans location ▁has ▁been ▁seen ▁through ▁the ▁comparison ▁of ▁mit och ond rial ▁DNA ▁sequence ▁with ▁the ▁gen ome ▁sequence ▁of ▁the ▁counter parts . ▁The ▁integration ▁and ▁recom bin ation ▁of ▁cy top las mic ▁m t D NA ▁into ▁the ▁nuclear ▁DNA ▁is ▁called ▁N uc lear ▁M ito ch ond rial ▁DNA , ▁which ▁is ▁abbre vi ated ▁as ▁NUM T . ▁The ▁possible ▁presence ▁of ▁organ elle ▁DNA ▁inside ▁the