Bring enzymes and genetics to life with a real-world case study students actually care about! In this engaging, NGSS-aligned activity, students investigate why some people can drink milk — and others can’t! Through guided readings, data graphs, and real enzyme analysis, your class will connect biochemistry, genetics, and evolution in one seamless lesson. Teacher Wins: 🧩 Perfect for sub plans, NGSS units, or biology review weeks 📘 Includes reading comprehension, graph analysis, and evolution