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See how your time inside the womb has determined your destiny on the outside.
2:35
A genetic mutation from generations ago causes half of this family to grow 6 fingers.
2:36
An extraordinary 70-year-long study in longevity has shown some shocking results.
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A small gene pool has lead to color-blindness spreading throughout an island population.
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Two men with nearly identical lifestyles, but vastly different metabolisms.