Understanding Evolution: your one-stop source for information on evolution
Resource library Teaching materials Evolution 101
 
EVOLUTION 101

Introduction

Patterns

Mechanisms

Microevolution

Speciation

Macroevolution

The big issues

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Microevolution

House sparrows have adapted to the climate of North America, mosquitoes have evolved in response to global warming, and insects have evolved resistance to our pesticides. These are all examples of microevolution — evolution on a small scale.

Here, you can explore the topic of microevolution through several case studies in which we've directly observed its action.

We can begin with an exact definition.

Microevolution is evolution on a small scale.


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A case study of coevolution: squirrels, birds, and the pinecones they love (2 of 2)

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Defining microevolution

Microevolution
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Evo examples
Learn more about microevolution that has occurred in response to global warming: Warming to evolution, a news brief with discussion questions.