• [History of life: Grades 9-12] Evolutionary change can sometimes happen rapidly.
• [History of life: Grades 13-16] Evolution is still continuing today.
• [History of life: Grades 13-16] Evolutionary change can sometimes happen rapidly.
• [Evidence of evolution: Grades 9-12] There is a fit between organisms and their environments, though not always a perfect fit. (LS4.C)
• [Evidence of evolution: Grades 13-16] There is a fit between organisms and their environments, though not always a perfect fit.
• [Mechanisms of evolution: Grades 9-12] Evolution results from selection acting upon genetic variation within a population. (LS4.B)
• [Mechanisms of evolution: Grades 9-12] Natural selection acts on the variation that exists in a population. (LS4.B, LS4.C)
• [Mechanisms of evolution: Grades 9-12] Populations, not individuals, evolve.
• [Mechanisms of evolution: Grades 9-12] Traits that confer an advantage may persist in the population and are called adaptations. (LS4.B, LS4.C)
• [Mechanisms of evolution: Grades 9-12] Natural selection is dependent on environmental conditions.
• [Mechanisms of evolution: Grades 9-12] Over time, the proportion of individuals with advantageous characteristics may increase due to their likelihood of surviving and reproducing. (LS4.B, LS4.C)
• [Mechanisms of evolution: Grades 13-16] Evolution results from natural selection acting upon genetic variation within a population.
• [Mechanisms of evolution: Grades 13-16] Over time, the proportion of individuals with advantageous traits may increase (and the proportion with disadvantageous traits may decrease) due to their chances of surviving and reproducing.
• [Mechanisms of evolution: Grades 13-16] Traits that confer an advantage may persist in the population and are called adaptations.
• [Mechanisms of evolution: Grades 13-16] Natural selection can act on the variation in a population in different ways.
• [Nature of science: Grades 9-12] Scientists test their ideas using multiple lines of evidence. (P6, NOS2)
• [Nature of science: Grades 13-16] Scientists test their ideas using multiple lines of evidence.

• Disciplinary Core Idea LS4.B: Natural Selection
• Disciplinary Core Idea LS4.C: Adaptation
• NOS Matrix understanding category 2. Scientific knowledge is based on empirical evidence.
• Science and Engineering Practice 6. Constructing explanations and designing solutions

This article includes a set of discussion and extension questions for use in class. It also includes hints about related lessons that might be used in conjunction with this one. Get more tips for using Evo in the News articles in your classroom.

Additional teaching tips for 13-16:
Use this resource to relate evolutionary concepts to the topics of gene expression or gas exchange in animals (or get more suggestions for incorporating evolution throughout your biology syllabus).

• Genetic Variation
• Natural Selection