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Unit 7: Natural Selection – Foundations and Mechanisms of Evolution

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Natural Selection and Evolution

  • Natural Selection Causes Adaptation
    07:48
  • Adaptation Improves Fitness
    02:57
  • Evolution can Occur Via Natural Selection
    04:32

History of Evolutionary Thought

  • Geological Thinking
    04:22
  • History of Evolutionary Theory Example 1
    02:45
  • Darwin and Wallace
    07:37

Introduction to Taxonomy

  • Introduction to Taxonomy Example 2
    01:37
  • Categorizing Life Based on Energy Acquisition
    05:48
  • Introduction to Taxonomy
    02:23

Evidence of Evolution

  • Types of Homologies
    04:46
  • Evidence of Evolution Example 1
    02:27
  • Fossils
    06:11

The Hardy-Weinberg Principle

  • Predicting Allele or Genotype Frequencies Using Hardy-Weinberg
    03:31
  • Testing if a Population is in Hardy-Weinberg Equilibrium
    08:26
  • B. Calculating Allele Frequency from a Genotype Frequency
    03:20

Genetic Drift

  • Genetic Drift Example 1
    02:00
  • Genetic Drift Example 2
    02:37
  • Genetic Drift
    05:06

Gene Flow

  • Gene Flow Example 1
    04:34
  • Gene Flow
    01:43

Introduction to Speciation

  • Introduction to Speciation
    03:03

Allopatric and Sympatric Speciation

  • Allopatric and Sympatric Speciation
    02:46
  • Allopatric and Sympatric Speciation Example 1
    04:25
  • Allopatric Speciation
    03:53

Adaptive Radiation

  • Developmental Genes & Regulation
    06:12
  • Cambrian Explosion
    05:10
  • Adaptive Radiation Example 1
    06:17

Extinctions

  • Cretaceous Extinction
    04:55
  • Extinctions
    04:48
  • Sixth Extinction
    02:29

Introduction to Phylogeny

  • Binomial Nomenclature
    02:32
  • Systematics
    06:57
  • Introduction to Phylogeny Example 1
    01:31

Phylogeny

  • Phylogeny Example 3
    04:12
  • Parts of a Phylogenetic Tree
    05:16
  • Phylogeny Example 1
    06:11