This project aims to develop a novel method for markedly accelerating production of genetically modified mice, which are a key 'tool' for studying biological processes and diseases. The work plans to take CRISPR, the latest gene-editing technique, to the next level by developing a novel CRISPR-based method to generate different mouse strains with distinct variations of the same gene sequences, at a fraction of the present cost and time. This project should overcome a major barrier to studying gene function with unprecedented detail, thereby opening new avenues for future research into biological processes. Thus, the outcomes from this project should impact on the entire field of biomedical research, and advance Australia's biotech industry.