Confirming a long-standing hypothesis scientists from the Netherlands' Leiden University have shown that the genetic information in the DNA not only determines who we are but also the DNA mechanics. Since the mid-198080s it has been hypothesised that there is a second layer of information on top of the genetic code: DNA s mechanical properties. Each of our cells contains two meters of DNA molecules so these molecules need to be wrapped up tightly to fit inside a single cell. The way in which DNA is folded determines how the letters are read out and therefore which proteins are actually