1. Natural Selection Simulation Variation exists within a population More offspring are born than can survive Phenotypic differences result in differential reproductive success Individuals that do survive, pass heritable traits on to offspring Over time (many generations) this could lead to changes in the population

2. Here’s What You Do... Materials/Procedures Groups of 3-4 1 Dice Describe an Environment Select a creature (real or imaginary) Describe 2 phenotypes/explain differential success Begin with 15 members of each PHENOTYPE (30 total) Use dice; create rules to simulate differential reproductive success Surviving babies will reproduce in the next generation Product 1 Poster per group that includes: Data Table for at least 8 generations (Generation 1= 15 of each of 2 phenotypes) Bar Graph representing each phenotype of each generation Illustration of creature and 2 phenotypes Description of the environmental stressor Rules of your simulation

3. A couple of things – Maybe have each variant have 3/kids and roll to see which has more survive to reproduce. Explain table 1 is a baseline Explain that each generation member rolls Post lab thought questions – what defined repro success/differential success.