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Overview: Students simulate breeding bunnies to show the impact that genetics can have on the evolution of a population of organisms. Author/Source: WGBH Grade level: 9-12 Time: One class period. Teaching tips: A rich class discussion will assist students in a deeper understanding of the concepts. Concepts: Correspondence to the Next Generation Science Standards is indicated in parentheses after each relevant concept. See our conceptual framework for details. Evolution results from selection acting upon genetic variation within a population. (LS4.B) Traits that confer an advantage may persist in the population and are called adaptations. (LS4.B, LS4.C) Inherited characteristics affect the likelihood of an organism's survival and reproduction. (LS4.B, LS4.C) The amount of genetic variation within a population may affect the likelihood of survival of the population; the less the available diversity, the less likely the population will be able to survive environmental change. Populations, not individuals, evolve. Over time, the proportion of individuals with advantageous characteristics may increase (and the proportion with disadvantageous characteristics may decrease) due to their likelihood of surviving and reproducing. (LS4.B, LS4.C) There is variation within a population. (LS3.B) Teacher background: Genetic Variation Natural Selection

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