Variation Is Essential: How Does Variation Within a Population Affect the Survival of a Species?:
This is a lesson about phenotypical variation within populations and how these differences are essential for biological evolution. Students will use a model organism (in this case, kidney beans) to explore variation patterns and subsequently connect these differences to artificial & natural selection. The NGSS’ CrossCutting Concepts and Science & Engineering Practices are embedded throughout the lesson.
The main learning objectives are:
- Using a model (kidney beans) to explore the natural variations within a population.
- Measuring differences between individuals in a population (population of beans).
- Describing how genetic/phenotypic variation is a key part of biological evolution because it is a prerequisite for natural selection.
- Demonstrating in which ways genetic variation is advantageous to a population because it enables some individuals to adapt to the environment while maintaining the survival of the population.
The NGSS Performance Expectations covered are HS-LS4-2. & HS-LS4-4.