A TI{2A-GAL4(1-20)::N-int} cassette has been inserted in-frame into the endogenous fz locus. The presence of the 2A peptide results in the GAL4(1-20)::N-int hemidriver being expressed as a separate protein under the control of endogenous fz regulatory sequences. The sgRNA sequence used to target the gene was: TTTACCCACCCTGATACAGG.