Lesson Objective

Explain how random processes (genetic drift, bottleneck, founder effect) impact the genetic diversity of a population.

Analyze the impacts of migration (gene flow) and mutation on a gene pool.

How can random, non-selective events completely alter the genetic makeup of a population?

What are the long-term evolutionary consequences of a drastic reduction in population size?

7.5-Hardy-Weinberg Equilibrium
7.6-Evidence of Evolution

Recognize that evolution is not always adaptive—sometimes it is entirely random.

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Unit 7 Test