This genetic drift lab is a fun, low-prep way for high school biology students to model how chance events affect populations. Using fruit-ring cereal, students simulate genetic drift, gene flow, and changes in genetic diversity. The lab begins with a short background reading that reviews genetic drift, natural selection, and gene flow, followed by simple pre-lab questions to build understanding. Next, students model and collect data on founder effect, bottleneck effect, and gene flow within thei