Designed to match traditional AP® Biology Lab 3. Using prepared slides and electronic images of whitefish and onion cells, students learn about the 4 stages of mitosis in Lab Activities A and B. Activity C requires the use of item #171100 Carolina BioKits®: Chromosome Simulation Kit, which is not included. A Sordaria Demonstration Cross Plate (item #155846) for demonstrating crossing over during meiosis is provided for Lab Activity D. Kit includes materials and instructions for extension activities at no extra cost to the teacher, plus teacher instructions and reproducible student sheets. The 8-Station Kit includes enough materials for a class of 32 students working in groups of 4. The 1-Station Kit includes materials for 1 group of 4 students. The 8-Station Replacement Set replaces consumed items.