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Our DNA, the double-stranded helix responsible for heredity, contains 3 billion letters that dictate everything from hair and skin color to blood type. In fact, DNA is the most important identity document we will ever carry. Besides random mutations and damage, it doesn’t change from the day we’re born.
While you can argue the actual number of wrinkles on her body, it’s more interesting to consider how Calment lived so far beyond average life expectancy when the vast majority of human lives are cut short by disease.