• [Mechanisms of evolution: Grades 13-16] The Hardy-Weinberg equation describes expectations about the gene pool of a population that isn't evolving, that is large, mates randomly, doesn't experience mutation, natural selection, or gene flow.
• [Mechanisms of evolution: Grades 13-16] Evolution results from genetic drift acting upon genetic variation within a population.
• [Mechanisms of evolution: Grades 13-16] Random factors can affect the survival of individuals and of populations.
• [Mechanisms of evolution: Grades 13-16] Smaller populations are more strongly affected by genetic drift than are larger populations.
• [Mechanisms of evolution: Grades 13-16] Genetic drift can cause loss of genetic variation in a population.

There are no NGSS/DCI concepts currently linked to this resource.

With increased experience, the instructor will be able to develop additional problem-based discussion questions, optimizing them for particular applications and topics. To learn more about how problem-based discussion and other types of active-learning activities can be easily incorporated into lecture (and for more downloadable slides!), visit our guide to active learning in the undergraduate classroom.

• Genetic Variation