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By ARTE France Scientifilms

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Our hands, our eyes , our face

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our all body is an aggregate of billions of cells.

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At the heart of each of them is nestled the DNA,

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the one that we received from our parents

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and that we'll transfer to our children.

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What is exactly passed

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from one generation to the other,

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from one cell to the other?

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We know that DNA is transmitted

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but not only DNA.

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Identical twins

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have the same DNA,

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the same genome,

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and nonetheless have physical differences.

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How is that possible?

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The genome has been considered like a book

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and indeed book's editions can be

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very different from each other.

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Scientist have assumed for a long time

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that DNA ruled our biologic destiny.

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Nowadays they're discovering a new world:

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we're becoming more and more aware that

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DNA doesn't explain everything.

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And more and more capable of cultivating

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the ideas about the impact of the environment.

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All around the world,

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biologists are investigating this new mystery.

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My job is to look into

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the cellular nucleus

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for new knowledge

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and to reach places that people have never reached before.

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A scientific adventure

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in which we seek to unravel step by step

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what influences our DNA

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during our intere lifetime,

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our identity

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and, possibly, our inheritance.

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The new mysteries of our inheritance

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A film by Laurence Selfaty

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wrote together with Cécile Dumas