With respect to the relative influence of genetics and environment on longevity the general conclusion is that

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Quizplus · Accepted Answer

Studies have shown that genetics only accounts for about 25% of the variation in lifespan, while environmental factors such as lifestyle choices and socioeconomic status account for the majority of the variation. Therefore, environment plays a bigger role than genetics in determining longevity.

With Respect to the Relative Influence of Genetics and Environment