By the end of this section, you will be able to do the following:
Explain the different ways natural selection can shape populations
Describe how these different forces can lead to different outcomes in terms of the population variation
By the end of this section, you will be able to do the following:
Define population genetics and describe how scientists use population genetics in studying population evolution
Define the Hardy-Weinberg principle and discuss its importance
By the end of this section, you will be able to do the following:
Describe the different types of variation in a population
Explain why only natural selection can act upon heritable variation
Describe genetic drift and the bottleneck effect
Explain how each evolutionary force can influence a population's allele frequencies
Describes Darwin's observations on the Galapagos Islands that led to his theory of evolution.
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Describes Darwin's observations on the Galapagos Islands that led to his theory of evolution.
A free CK-12 account is required to view all materials.
Describes Darwin's observations on the Galapagos Islands that led to his theory of evolution.
A free CK-12 account is required to view all materials.
Covers the evolution of life.
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Overview of the evolution of life and Darwin's theory of evolution.
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Describes three of the four forces of evolution: mutation, gene flow, and genetic drift.
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College-level course focusing on the principles of genetics. Course topics include structure and function of genes, chromosomes and genomes, biological variation, population genetics, use of genetic methods to analyze protein function, gene regulation, and inherited disease. Course features include lecture notes, assignments and solutions, and exams and solutions.
This 18-minute video lesson provides an introduction to evolution, variation in a population, and Natural Selection. [Biology playlist: Lesson 1 of 71].
Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.
A general overview over the evolution of one population or one species over a short period of time.
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Describes how natural selection changes allele frequency.
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This 13-minute video discusses how the Owl Butterfly may have gotten the spot on its wings. [Biology playlist: Lesson 5 of 71].
Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.
This explanation of genetic drift is straightforward and easy to understand. Illustrations are provided to help visual learners
Explore the evidence for the theory of evolution.
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Covers Darwin's theory of evolution by natural selection.
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Overview of the basic concepts behind evolution.
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This 20-minute video lesson discusses how variation can be introduced into a species. [Biology playlist: Lesson 7 of 71].
Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.
