ap biology - evolution: natural selection & speciation

timestamps

• 0:00

  Introduction and Ecology Wrap-up

• 2:06

  Human Impact on Environment

• 2:37

  Climate Change Details

• 3:40

  Greenhouse Gases Explained

• 5:46

  Agriculture's Environmental Effects

• 7:22

  Transition to Review

• 8:25

  AP Exam Structure

• 9:56

  Grid-In Question Strategies

• 13:00

  Free Response Tips

• 15:34

  Microevolution Overview

• 16:09

  Natural Selection Basics

• 19:17

  Types of Selection

• 21:54

  Peppered Moth Example

• 24:01

  Genetic Variation Sources

• 26:04

  Heterozygote Advantage

• 30:44

  Allele Frequency Changes

• 31:46

  Genetic Drift Examples

• 34:49

  Antibiotic Resistance

• 38:27

  Macroevolution Introduction

• 40:00

  Defining a Species

• 42:04

  Pre-Zygotic Barriers

• 45:10

  Post-Zygotic Barriers

• 51:55

  Preventing Gene Flow

• 53:58

  Allopatric vs Sympatric Speciation

• 57:07

  Wrapping Up Review