ap biology - unit 7: phylogenetic trees & cladograms

timestamps

• 0:00

  Adaptive Radiation Introduction

• 0:33

  Galapagos Finches Example

• 1:05

  Phylogenetic Trees Overview

• 1:35

  Visualizing Species Relationships

• 2:07

  Closest Common Ancestors

• 2:38

  Tree Orientation and Time

• 3:09

  Constructing Cladogram from Data

• 3:40

  Data Types for Relatedness

• 4:12

  Interpreting Amino Acid Table

• 4:43

  Table Rows and Columns

• 5:14

  Differences vs Similarities Rule

• 5:45

  Highest and Lowest Differences

• 6:16

  Least Related Species

• 6:47

  Most Related Species

• 7:18

  Rotating Cladogram Axes

• 7:49

  Placing Closely Related Species

• 8:19

  Sister Taxon Concept

• 8:51

  Outlier Species Placement

• 9:21

  Final Cladogram Structure

• 9:53

  Applying Speciation Concepts

• 10:24

  Species Divergence Scenario

• 10:55

  Hybrid Offspring Poor Survival

• 11:27

  Hybrid Offspring Good Survival

• 11:58

  Polyploidy and Sympatric Speciation

• 13:00

  Wrapping Up Key Vocab