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View full lesson: http://ed.ted.com/lessons/how-the-choices-you-make-can-affect-your-genes-carlos-guerrero-bosagna
Here’s a conundrum: Identical twins originate from the same DNA … so how can they turn out so different — even in traits that have a significant genetic component? Carlos Guerrero-Bosagna explains that while nature versus nurture has a lot to do with it, a deeper, related answer can be found within something called epigenetics.
Lesson by Carlos Guerrero-Bosagna, animation by Chris Bishop.