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Overview: Students find that selection occurs in a dish of mixed candies. Author/Source: Tang, Carol Grade level: 9-12 Time: 30 minutes Concepts: Correspondence to the Next Generation Science Standards is indicated in parentheses after each relevant concept. See our conceptual framework for details. Traits that confer an advantage may persist in the population and are called adaptations. (LS4.B, LS4.C) Depending on environmental conditions, inherited characteristics may be advantageous, neutral, or detrimental. Random factors can affect the survival of individuals and of populations. 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 Adaptation Natural Selection

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