Continuous implementation of new techniques allowing increasingly precise genetic manipulations makes the fruit fly Drosophila melanogaster an impacting model to study the nervous system. While transgenic approaches have been heavily used to investigate how the brain develops, genome editing has been notoriously hard in the fruit fly. The advent of versatile CRISPR/Cas9-based genome editing techniques allow the generation of engineered loci using homologous repair to replace the endogenous genome sequence with a designed template of interest. We here provide a protocol to generate an FRT/FLP-based conditional GFP or HA-flagged gene knockout.
Keywords: Brain; CRISPR; Conditional alleles; Drosophila; Genome editing.