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        Part of Your Inner Fish
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        The 500 Million-Year History of Brains | Your Inner Fish

        The nervous systems of even the simplest organisms can demonstrate the most significant genetic and developmental qualities of the human brain. Our brain enables us to do some amazing things, so it's not surprising that its evolutionary story runs deep. Biologists Peter Holland and Neil Shubin go hunting for amphioxus, a tiny, wormlike animal, whose genes show us the ancient roots of our brain.

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