Prentice Hall Biology Chapter 16: Evolution of Populations - Videos & Lessons

About This Chapter

The Evolution of Populations chapter of this Prentice Hall Biology Textbook Companion Course helps students learn the essential biology lessons of evolution of populations. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Evolution of Populations textbook chapter.

How it works:

Identify the lessons in Prentice Hall Biology Evolution of Populations chapter with which you need help.
Find the corresponding video lessons within this companion course chapter.
Watch fun videos that cover evolution of populations topics you need to learn or review.
Complete the quizzes to test your understanding.
If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.

Students will learn:

Genetic variability and random mutation
Hardy Weinberg equilibrium overview, equation and evolutionary agents
Allopatric and sympatric speciation
Prezygotic and postzygotic barriers

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7 Lessons in Chapter 16: Prentice Hall Biology Chapter 16: Evolution of Populations

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1. 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.

2. 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.

3. 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.

4. 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.

5. 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.

6. 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.

7. 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.

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