English C2 CPE

A (0) DETECTIVE is (1) ............ her team: 'The DNA test results are in. We're looking for a white male (2) ............, 34-37 years old, born in the summer in a temperate climate. He's used cocaine in the past. His mother smoked, but he doesn't. He drinks (3) ............, like his Dad. We're seeing high stress (4) ............. Also, looking at the air pollution markers, let's start looking downtown, probably near a (5) ............intersection'. Science fiction? Yes, for now. But advances in epigenetics - the study of reversible chemical modifications to chromosomes that (6) ............ a role in determining which genes are activated in which cells - might soon start making their way out of research labs and into criminal forensics (7) ............. Take the idea of the epigenetic clock, one of the ways in which our cells and DNA can betray our age. Epigenetic patterns change throughout our lives, along broadly (8) ............ paths, making it possible to infer age from DNA samples.