ap biology - unit 7 review: macroevolution & speciation

timestamps

• 0:00

  Recap of Natural Selection

• 1:34

  Introduction to Macroevolution

• 2:35

  Cladograms and Relatedness

• 3:36

  Defining Species Concepts

• 4:39

  Biological Species Concept

• 6:12

  Gene Flow in Speciation

• 7:46

  Reproductive Isolation Barriers

• 8:47

  Pre-Zygotic Barriers Overview

• 9:49

  Habitat and Temporal Isolation

• 11:55

  Behavioral Isolation Examples

• 13:30

  Mechanical and Gametic Isolation

• 14:32

  Post-Zygotic Barriers Explained

• 16:06

  Reduced Hybrid Viability

• 18:41

  Preventing Gene Flow

• 21:17

  Allopatric vs Sympatric Speciation

• 23:20

  Allopatric Speciation Examples

• 25:55

  Sympatric Speciation in Flies

• 27:59

  Decreasing Gene Flow Methods

• 30:04

  Habitat Differentiation in Lizards

• 31:36

  Sexual Selection Overview

• 32:37

  Polyploidy in Plants

• 34:42

  Adaptive Radiation Explained

• 36:46

  Phylogenetic Trees Basics

• 38:48

  Constructing Cladograms

• 42:27

  Amino Acid Differences Analysis

• 45:02

  Building the Tree

• 47:40

  Thought Questions on Speciation

• 50:18

  AP Exam Question Example