In animals. Paternal mtDNA inheritance in animals varies. For example, in Mytilidae mussels, paternal mtDNA "is transmitted through the sperm and establishes itself only in the male gonad." In testing 172 sheep, "The Mitochondrial DNA from three lambs in two half-sib families were found to show paternal inheritance." An instance of paternal leakage resulted in a study on chickens.

Haplogroup J is a human mitochondrial DNA (mtDNA) haplogroup.The clade derives from the haplogroup JT, which also gave rise to haplogroup T.In his book The Seven Daughters of Eve, Bryan Sykes named the originator of this mtDNA haplogroup Jasmine.Within the field of medical genetics, certain polymorphisms specific to haplogroup J have been associated with Leber's …

DNA mitochondrialny (mtDNA, mDNA) – materiał genetyczny w postaci kolistego DNA znajdujący się w macierzy mitochondrium (łac. matrix).Obecność DNA tłumaczona jest teorią endosymbiotycznego pochodzenia tych organelli.. Pojedyncze ludzkie mitochondrium zawiera 4–10 kolistych cząsteczek DNA o długości 16569 par zasad, z których każda koduje 37 genów. …