How the choices you make can affect your genes - Carlos Guerrero-Bosagna (Epigenetica: stile di vita ed implicazioni genetiche) - via @TedEd

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.