Original sentence: "  This single instance is cited as evidence that the whole field of [[Human." Heteroplasmy occurs when two slightly different mitochondrial sequences are inherited from the mother, as a result of several hundred mitochondria being present in the ovum.However, there has been only a single possible case of human paternal mitochondrial DNA transmission.It has also been said in early studies that about 1-2% of a person's mitochondria can be inherited from the father.The mixing of maternal and paternal mtDNA was thought to have been found in humans and chimpanzees.mitochondrial genetics]] is invalid
Edited sentence: "   This single instance is cited as evidence that the whole field of Human mitochondrial genetics is invalid.However, there has been only a single conclusively proven case of human paternal mitochondrial DNA transmission.It has also been shown that about 1-2% of a person's mitochondria can be inherited from the father.The mixing of maternal and paternal mtDNA has been found in humans and chimpanzees