mitochondrial DNA

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mitochondrial DNA

n. Abbr. mtDNA
DNA that is contained in the mitochondria of eukaryotic cells and is inherited maternally.

mitochondrial DNA

n
(Genetics) DNA found in mitochondria, which contains some structural genes and is generally inherited only through the female line. Abbreviation: mtDNA
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There is an additional threat, as scientists have discovered over the past several decades: relative to nuclear DNA, mitochondrial DNA possesses few defenses against free radical damage.
Like nuclear DNA, mitochondrial DNA harbours genes that can mutate and give rise to disease.