Download 2 How Populations Evolve

HOW POPULATIONS EVOLVE
Big Idea 1/Topic 2
BIG IDEA 1: EVOLUTION
MAIN TOPICS
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Genes, Populations and
Evolution
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Natural Selection
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Maintenance of Diversity
Essential Knowledge
The process of evolution drives the diversity and unity of life.
Learning Outcomes
Genes, Populations and Evolution
Explain how evolution in populations is related to a change in allele
frequencies.
List the five conditions necessary to maintain Hardy-Weinberg equilibrium.
Apply the Hardy-Weinberg principle to estimate equilibrium genotype
frequencies.
Describe the agents of evolutionary change.
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1.A.1.c, e - h
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1.A.2.a, c
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1.A.4.a, b 1-3
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1.B.1.a 2-3
Determine the type of natural selection operating on a trait by the change in
shape of a phenotype distribution.
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1.C.3.b.IE
Explain how sexual selection drives adaptation for increased fitness.
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4.C.1.b.1
Maintenance of Diversity
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4.C.3.c
Identify the ways in which diversity is maintained in populations.
Natural Selection
Compare and recognize the difference between a population undergoing
stabilizing, directional and disruptive selection.
Describe why heterozygote advantage is a form of stabilizing selection, and
demonstrate how with examples of sickle cell disease & cystic fibrosis.
Essential Questions:
What is the connection between change in the environment and
change in allele frequencies?
How can the Hardy-Weinberg mathematical model be used to
analyze genetic drift and effects of selection in the evolution of
populations?
Elk
Biology is the science. Evolution is the concept that makes biology
unique. - Jared Diamond
ESSENTIAL VOCABULARY
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Population
Microevolution
Population genetics
Gene pool
Allele frequency
Hardy-Weinberg equilibrium (HWE)
Hardy-Weinberg principle
Mutation
Gene flow
Reproductively isolated
Genetic drift
Bottleneck effect
Founder effect
Inbreeding
Nonrandom mating
HARDY-WEINBERG
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Assortative mating
Polygenic
Stablizing selection
Directional selection
Disruptive selection
Sexual selection
Fitness
Sexual dimorphism
Cost-benefit analyses
Dominance heirarchies
Territory
Territoriality
Heterozygote advantage
Sickle-cell disease
Cystitic fibrosis