MICROANATOMY

Detailed explanation-1: -Although most DNA is packaged in chromosomes within the nucleus, mitochondria also have a small amount of their own DNA. This genetic material is known as mitochondrial DNA or mtDNA.

Detailed explanation-2: -Which of the following statements is true about mitochondrial DNA? DNA is found both within the nucleus and the mitochondria. Mitochondrial DNA is inherited from the mother since the ovum is the only source of mitochondria for the gamete.

Detailed explanation-3: -Then, in 1963, a couple at Stockholm University discovered DNA outside the nucleus. Looking through an electron microscope, Margit and Sylvan Nass noticed DNA fibers in structures called mitochondria, the energy centers of our cells.

Detailed explanation-4: -Mitochondrial DNA is important for a number of reasons. 13 of its 37 genes are involved in the process known as oxidative phosphorylation. This is the metabolic pathway that produces adenosine triphosphate (ATP), the main energy source of the cell.