Cell Cycle and Mitosis

This module introduces activities that allow students to walk through the cell cycle and mitotic cell division processes. As part of the activities, students learn about and apply knowledge of chromosomal behavior to identify different stages of mitotic cell division in plant and animal cells. They also calculate and compare mitotic indices for normally dividing and cancerous cells. Students apply quantitative and statistical concepts such as sample size, mean, standard deviation, and standard error of the mean to discuss the impact of sample sizes on interpretation of biological data (i.e., normally dividing and tumor cells, in this case).

本模块旨在引导学生逐步深入细胞周期及有丝分裂过程。在活动过程中，学生不仅学习并运用有关染色体行为的知识来识别植物和动物细胞的有丝分裂不同阶段，而且计算并比较正常分裂与癌细胞的有丝分裂指数。学生运用样本量、平均值、标准差及均值的误差等量化与统计概念，以探讨样本量对生物学数据（例如正常分裂细胞与肿瘤细胞）解释的影响。