Since we were kids (unless under the spell of a creationist education), we have been told that genetics is the reason for the colour of our eyes, our hair, our height and whether we look more like mum or dad. In the last few years, it might seem to many that gene association studies have gone a tad far and that everything is due to genetics, one way or the other. Well, that is actually the truth. Even your ability to drink coffee is written in your genes. Want to see how? Keep on reading this article on mappingignorance.org