About This Chapter
Who's it for?
This unit of our AP Biology Homeschool course will benefit any student who is trying to learn about an overview of evolution. There is no faster or easier way to learn about evolution. Among those who would benefit are:
- Students who require an efficient, self-paced course of study to learn adaptation, natural selection, and speciation.
- Homeschool parents looking to spend less time preparing lessons and more time teaching.
- Homeschool parents who need a science curriculum that appeals to multiple learning types (visual or auditory).
- Gifted students and students with learning differences.
How it works:
- Students watch a short, fun video lesson that covers a specific unit topic.
- Students and parents can refer to the video transcripts to reinforce learning.
- Short quizzes and an evolution unit exam confirm understanding or identify any topics that require review.
Evolution Overview Unit Objectives:
- Understand how biogeography, paleontology, embryology, and other sciences support evolutionary theory.
- Describe the rates at which evolution occurs.
- Explain the Hardy Weinberg equilibrium model.
- Discuss adaptation and natural selection.
- List types of evolution.
- Define speciation.
- Describe the differences between genetic variation and mutation.
- State how rapid adaptation differs.
- Discuss evolution in relation to artificial selection.
1. Theories of Evolution: Lamarck vs. Darwin
We'll look at the interplay between population genetics and environment. Are traits individually acquired or do entire populations evolve? The flying hamsters and a few other notable experiments will provide the answers.
2. Evidence for Evolution: Paleontology, Biogeography, Embryology, Comparative Anatomy & Molecular Biology
There is much support for the theory of evolution. This evidence comes from a variety of scientific fields and provides information that helps us trace changes in species over time. In this lesson, we'll look at this evidence and explore how it supports the theory of evolution.
3. Rates of Evolution: Punctuated Equilibrium & Molecular Clock Hypothesis
In general, evolution is a very long process. But rates of evolution can be different for different organisms. In this video lesson, you will identify how scientists study rates of evolution and fill in some of the missing 'steps' in the fossil record.
4. Hardy-Weinberg Equilibrium I: Overview
In this lesson, we'll examine population genetics in greater detail. We'll also explore notions of Hardy-Weinberg equilibrium for large, stable populations. Is the genetic makeup of our flying hamster population changing? The Hardy-Weinberg equilibrium can serve as a reference point as we try to answer population genetics questions.
5. Hardy-Weinberg Equilibrium II: The Equation
The Hardy-Weinberg equilibrium equation is represented by a polynomial, so we'll have to do some calculations. Don't be intimidated; a few coin tosses can help us make sense of allelic frequencies in a given gene pool.
6. Hardy-Weinberg Equilibrium III: Evolutionary Agents
In this lesson, you'll learn how the Hardy-Weinberg equation relates to different evolutionary agents and population changes. Discover how the equation may be used to discover populations that are not in equilibrium.
7. Natural Selection & Adaptation: Definition, Theory & Examples
How does natural selection help shape the amazing types of animals we witness around us? In this lesson, we'll explore adaptations and what they can tell us about a species' past evolution.
8. Natural Selection: Definition, Types & Examples
We'll take a look at the types of natural selection that can occur. From flying hamsters to moths, you'll start to grasp the different paths organisms can take as they respond to their changing environments over time.
9. Speciation: Allopatric and Sympatric Speciation
Discover the definition of a species and learn more about how species split. Find out common terms related to the splitting of species and study what role polyploidy plays in the development of a species.
10. Prezygotic Reproductive Barriers & Speciation: Definition & Examples
We may take for granted why animals choose to mate with other animals of similar appearance, but it's not that simple. There are actually biological barriers to reproduction that can prevent even seemingly closely related species from reproducing. This lesson looks at one such category of hindrances, prezygotic barriers, which make fertilization impossible.
11. Postzygotic Reproductive Barriers: Definition & Examples
Do flying hamsters represent a separate species from your run-of-the-mill hamsters? We'll get to the bottom of this by performing crosses between the two hamster types. You'll explore postzygotic reproductive barriers and their possibly tragic consequences.
12. Genetic Variability and Random Mutation
Evolution is driven by variation among populations. The amount of variability determines how well a population can adapt to environmental changes, while random mutations can provide new variations that help a population adapt to unexpected changes.
13. An Example of Rapid Adaptation: The Peppered Moths
Normally, adaptations occur over thousands or millions of years. However, drastic changes in the environment can shorten the time period in which a change comes about. In such cases, we can learn a lot about the evolutionary process and how natural selection drives it forward.
14. Artificial Selection in Evolution
Humans have been selectively breeding for desirable traits in plants and animals for a long time. This artificial selection allows for a lot of control in the breeding process but can also lead to unintended mutations within a population of organisms.
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Other chapters within the AP Biology: Homeschool Curriculum course
- AP Biology - Science Basics: Homeschool Curriculum
- AP Biology - The Origin of Life on Earth: Homeschool Curriculum
- AP Biology - Inorganic Chemistry Review: Homeschool Curriculum
- AP Biology - Organic Chemistry Review: Homeschool Curriculum
- AP Biology - Enzymatic Biochemistry: Homeschool Curriculum
- AP Biology - Cell Biology: Homeschool Curriculum
- AP Biology - Biological Systems Requirements - Homeschool Curriculum
- AP Biology - Cell Division: Homeschool Curriculum
- AP Biology - Metabolic Biochemistry: Homeschool Curriculum
- AP Biology - DNA and RNA Overview: Homeschool Curriculum
- AP Biology - DNA Replication: Homeschool Curriculum
- AP Biology - Transcription & Translation Process: Homeschool Curriculum
- AP Biology - Genetics and Heredity: Homeschool Curriculum
- AP Biology - Genetic Mutations: Homeschool Curriculum
- AP Biology - Phylogeny & Classification of Organisms: Homeschool Curriculum
- AP Biology - Plant Biology: Homeschool Curriculum
- AP Biology - Plant Reproduction & Growth: Homeschool Curriculum
- AP Biology - Animal Reproduction and Development: Homeschool Curriculum
- AP Biology - Reproductive Systems Anatomy & Physiology: Homeschool Curriculum
- AP Biology - Human Body Systems: Homeschool Curriculum
- AP Biology - The Nervous, Immune & Endocrine Systems: Homeschool Curriculum
- AP Biology - Ecology Overview: Homeschool Curriculum
- AP Biology - Animal Behavior: Homeschool Curriculum
- Basic Molecular Biology Laboratory Techniques: Homeschool Curriculum
- AP Biology - Analyzing Scientific Data: Homeschool Curriculum
- AP Biology - Laboratory: Homeschool Curriculum