Binary expression systems are flexible and versatile genetic tools in Drosophila. The Q-system is a recently developed repressible binary expression system that offers new possibilities for transgene expression and genetic manipulations. In this review chapter, we focus on current state-of-the-art Q-system tools and reagents. We also discuss in vivo applications of the Q-system, together with GAL4/ UAS and LexA/ LexAop systems, for simultaneous expression of multiple effectors, intersectional labeling, and clonal analysis.
Riabinina, O., & Potter, C. J. (2016). The q-system: A versatile expression system for drosophila. In Methods in Molecular Biology (Vol. 1478, pp. 53–78). Humana Press Inc. https://doi.org/10.1007/978-1-4939-6371-3_3