Mitochondrial DNA was the DNA located in mitochondria.

Mitochondrial DNA was one area where there were significant biological similarities between mothers and daughters, to the point that it might even lead their bio-neural signatures to be confused. (DIS: "Perpetual Infinity")

After Sylvia Tilly disappeared in a jahSepp cocoon, Paul Stamets theorized that it was an organic transporter, which he tested by scanning it for Tilly's mitochondrial DNA, as well as her lipids and proteins. (DIS: "Saints of Imperfection")

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