This page discusses gene expression study methods, particularly using transgenic techniques in Drosophila with the even-skipped gene and beta-galactosidase for visualization. It highlights green fluor...This page discusses gene expression study methods, particularly using transgenic techniques in Drosophila with the even-skipped gene and beta-galactosidase for visualization. It highlights green fluorescent protein (GFP) for real-time monitoring in living cells and advancements in DNA chip technology for analyzing thousands of genes simultaneously.