The wonderful world of epigenetics

Genes are the instructions that tell our cells what to do, but how do different types of cells know which genes to switch on or off at the right time? The solution lies in epigenetics - the molecular bells and whistles that act on top of our DNA to control gene activity. Plus, a new gene involved in severe obesity, and a mythical gene of the month. Like this podcast? Please help us by supporting the Naked Scientists