Homoplasmy

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Homoplasmy is the presence of a mutation affecting all of the mitochondrial DNA (mtDNA) copies in a cell. Since there are hundreds or even thousands of mtDNA copies in every eukaryotic cell, mutations may either be present in all copies, homoplasmy, or affect only a fraction of them (heteroplasmy).

See also microheteroplasmy.

Homeoplasmy = All mitochondira of a cell or a tissue have the same Genome which may be either the Wild type or one with the mutation