This unit covers the mechanisms of evolution.

Chapters include:

Chapter 22: Descent with Modification

Chapter 23: The Evolution of Populations

Chapter 24: The Origin of Species

Chapter 25: Phylogeny and Systematics

You will also find external links to:

  • Teachings about Evolution and the Nature of Science
  • Evolution 101

This unit is part of the Biology Links for One Laptop Per Child course.

Collection Contents


This is a lesson on why it is important to teach and learn evolution and the nature of science. This resource is part of the Biology Links for One Laptop Per Child course which contains units on Exploring Life; The Cell; Genetics; Mechanisms of Evolution; The Evolutionary History of Biological Diversity; Plant Form and Function; Animal Form and Function; Ecology; and Astrobiology.
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Evolution 101

by Alison Loomis

What is evolution and how does it work? Evolution 101 provides the nuts-and-bolts on the patterns and mechanisms of evolution. You can explore the following sections: An introduction to evolution: Evolution briefly defined and explained The history of life: looking at the patterns: How does evolution lead to the tree of life? Mechanisms: the processes of evolution: How does evolution work? Micro-evolution: How does evolution work on a small scale? Speciation: What are species anyway, and how do new ones evolve? Macro-evolution: How does evolution work on a grand scale? The big issues: What are some of the big questions that evolutionary biologists are trying to answer?
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Chapter 22: Descent with Modification contains external links to: The History of Evolutionary Thought Species, Speciation, and the Environment Natural Selection: Charles Darwin & Alfred Russel Wallace Adaptation Tutorial Understanding Evolution: Survival of the Sneakiest (comic strip) PBS Short Films on Evolution for Students Ancient Farmers of the Amazon (Activity on Ants) This resource is part of the Biology Links for One Laptop Per Child course which contains units on Exploring Life; The Cell; Genetics; Mechanisms of Evolution; The Evolutionary History of Biological Diversity; Plant Form and Function; Animal Form and Function; Ecology; and Astrobiology.
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Chapter 23: The Evolution of Populations contains external links to: Introducing the Arthropods Life Has a History Tour I Life Has a History Tour II This resource is part of the Biology Links for One Laptop Per Child course which contains units on Exploring Life; The Cell; Genetics; Mechanisms of Evolution; The Evolutionary History of Biological Diversity; Plant Form and Function; Animal Form and Function; Ecology; and Astrobiology.
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Chapter 24: The Origin of Species contains external links to: The Origins of Life Tutorial This resource is part of the Biology Links for One Laptop Per Child course which contains units on Exploring Life; The Cell; Genetics; Mechanisms of Evolution; The Evolutionary History of Biological Diversity; Plant Form and Function; Animal Form and Function; Ecology; and Astrobiology.
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Chapter 25: Phylogeny and Systematics contains external links to: Phylogenetic Systematics, a.k.a. Evolutionary Trees Similarities and Differences: Understanding Homology and Anology This resource is part of the Biology Links for One Laptop Per Child course which contains units on Exploring Life; The Cell; Genetics; Mechanisms of Evolution; The Evolutionary History of Biological Diversity; Plant Form and Function; Animal Form and Function; Ecology; and Astrobiology.
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