Q&A: How DNA detective work is helping crack complex diseases 6 May, 2021 01:30 AM 6 minutes to read Recent breakthroughs in genetics have transformed our understanding of many complex diseases. Image / 123RF The human genetic code is mind-bogglingly complex - but it's a field of science Professor Justin O'Sullivan feels at home in. The deputy director of the University of Auckland's Liggins Institute, and a fellow of the Office of the Prime Minister's Chief Science Advisor, will be giving his inaugural professorial lecture tomorrow afternoon about genetics, complex diseases and the microbiome. Science reporter Jamie Morton chatted with him ahead of his talk.