Sofia Quinodoz is unpacking the organization of cells’ nuclei. DNA condensed in the nucleus is strategically packed so that genes can be turned on and off at the right times. Scientists suspect that small droplets called nuclear condensates help guide this packing process, concentrating important proteins and making sure that related genes stick close together. As a doctoral student, Quinodoz developed a new way to map how the nucleus is organized. Now, Quinodoz is applying that technology to better understand how these droplets organize the genome and drive gene regulation.