Ch 17: Principles of Evolution & Natural Selection

About This Chapter

This chapter provides a fun way to learn important facts about the principles of evolution and natural selection. The lessons go over different topics needed to understand evolutionary theory such as artificial and natural selection.

Principles of Evolution & Natural Selection - Chapter Summary

One of the most significant concepts in the scientific field of biology is the theory of evolution and natural selection. This chapter contains several online video and text lessons that cover major topics related to these theories. Included in these lessons are information on the fossil record, genetics and evolution, and adaptation. You will learn about essential components of these theories and scientific figures associated with them. Specific topics you will learn about are:

  • The theory of evolution
  • Hardy Weinberg Equilibrium
  • Charles Darwin's theory of natural selection
  • Natural selection and adaptation
  • Different types of natural selection

You can answer questions in the chapter's practice quizzes and final exam to ensure that you have understood major topics related to this subject. For clarification on specific points, the chapter offers you the opportunity to message the lesson instructors directly. Your personal Dashboard allows you to track your learning progress as you go through this chapter.

9 Lessons in Chapter 17: Principles of Evolution & Natural Selection
Test your knowledge with a 30-question chapter practice test
Theories of Evolution: Lamarck vs. Darwin

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.

Hardy-Weinberg Equilibrium: Definition, Equation & Evolutionary Agents

2. Hardy-Weinberg Equilibrium: Definition, Equation & Evolutionary Agents

In this lesson we will define Hardy-Weinberg equilibrium and break down the Hardy-Weinberg equation to figure out if a population of hypothetical beetles is evolving.

Darwin's Theory of Natural Selection: Overview

3. Darwin's Theory of Natural Selection: Overview

In this lesson, you'll be introduced to Charles Darwin and his theory of natural selection. You'll also learn a bit about how his ideas impacted science, popular understandings of human origins, and the debate his theories have sparked.

Natural Selection & Adaptation: Definition, Theory & Examples

4. 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.

Natural Selection: Definition, Types & Examples

5. 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.

Artificial Selection in Evolution

6. 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.

Genetic Variability and Random Mutation

7. 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.

The Human Fossil Record & Human Evolution

8. The Human Fossil Record & Human Evolution

Fossils can help tell the story of how we evolved. This lesson sheds light on our closest relatives from the past and what traits human beings have developed over time. You'll learn about those species that are extinct but who live on in our genes.

Evidence for Evolution: Paleontology, Biogeography, Embryology, Comparative Anatomy & Molecular Biology

9. 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.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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