View full lesson: ed.ted.com/lessons/dna-the-book-of-you-joe-hanson Your body is made of cells -- but how does a single cell know to become part of your nose, instead of your toes? The answer is in your body's instruction book: DNA. Joe Hanson compares DNA to detailed manual for building a person out of cells -- with 46 chapters (chromosomes) and hundreds of thousands of pages covering every part of you. Lesson by Joe Hanson, animation by Nipun.Co Motion Craft.

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