Before revision: Rather than generating transgenic flies with the enhancer linked directly to the gene of interest (which takes about a year , if you are starting without the appropriate DNA construct), you simply mate (cross) one transgenic fly with another transgenic fly.Andrea Brand and Norbert Perrimon (1993).
After revision: Rather than generating transgenic flies with the enhancer linked directly to the gene of interest (which takes about a year when starting without the appropriate DNA construct), is simply mated (crossed) one transgenic fly with another transgenic fly.Andrea Brand and Norbert Perrimon (1993).