How do you go from a cell to a baby? This question fixated Kat Arney at the beginning of her career, and pushed her towards epigenetics ‘before it was cool’. From travelling the globe asking how genes work, to her upcoming book ‘Rebel Cell’, she discusses the world of genetics. This week, Patrick talks to Kat Arney - a geneticist and science writer demystifies genetics on her fortnightly Genetics Unzipped podcast. They discuss the difference between the male and female response to coronavirus and her work on the COVID19 tracking ZOE app.