New technical terms (I): Epigenetics

Epigenetics, what does it mean? Columnist John Gadd explains in his latest column what it is. Even after years of reading scientific papers John sometimes needs to look up a word or two himself. Way back in 2003 at the end of my first pig textbook I compiled a glossary of 425 technical terms to do with pigs. I was surprised how many there were. Even so, in my third book, I had to extend this list to 500. I have received several comments on the idea such as “Strange that no-one writing a p