Curated OER
Genetic Variability
Using black and white construction paper, evolutionary biologists simulate the classic peppered moth study. They use beans in a frequency and natural selection exercise. Finally, they analyze germinated seeds for variations. All three...
Curated OER
Sexual Reproduction and Meiosis
In this biology instructional activity, 9th graders create one chromosome using a red plasticine and another using blue plasticine. Then they illustrate different ways of crossing over, including double crossovers. Students also explain...