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Chapter 20 Essential Questions
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Define evolution.
Identify the theories of Lamark and Darwin, be sure to explain them.
What is necessary for evolution to occur?
What does polymorphism mean, and how can it lead to evolution?
What are the five principles that must be met in order for a population to be in Hardy Weinberg
Equilibrium?
What is the Hardy Weinberg equation? Identify what each part of the equation means.
In a population of red (dominant allele) or white flowers in Hardy-Weinberg equilibrium, the
frequency of red flowers is 91%. Calculate all of the H/W values.
Name and describe the five agents of evolutionary change.
Discuss the founder effect and bottleneck effect.
Compare and contrast artificial and natural selection.
What is fitness? Discuss fitness in water striders.
What are some things that might go against natural selection?
What is negative frequency dependant selection?
What is positive frequency dependant selection?
Define and give an example of heterozygote advantage.
Describe, graph and give an example of disruptive selection.
Describe, graph and give an example of directional selection.
Describe, graph and give an example of stabilizing selection.
Describe an experiment that showed natural selection in a short period of time.
What are the limits of natural selection?