Variation in mitochondrial genotype has substantial lifespan effects which may be modulated by nuclear background.

Abstract excerpt

Mitochondria are thought to play a central role in aging. In humans, specific naturally occurring mitochondrial genetic variants are overrepresented among centenarians, but only in certain populations; therefore, we cannot tell whether this effect is due solely to mitochondrial genetics or to nuclear-mitochondrial gene complexes, nor do we know the magnitude of the effect in terms we can relate to, such as mean...

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