Mitochondrial DNA is: (A) Closed circular, (B) Nicked circular, (C) Linear, (D) Open circular
Answer is A. Mitochondrial DNA (mtDNA or mDNA) is the DNA located in mitochondria, cellular organelles within eukaryotic cells that conve chemical energy from food into a form that cells can use, adenosine triphosphate (ATP). Ref-Harpers illustrated biochemistry 30/e p585