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." There has been evidences that paternal leakage is an integral part of the inheritance of Drosophila simulans.
Read more about this topic: Paternal Mt DNA Transmission
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