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What is evolution and how does it work?

Sub-topics (containing additional resources):

Evo-Devo , Examples of evolution , Genetics , History of life on Earth , Macroevolution , Microevolution , Natural selection , Speciation 

Resources:

Evolution 101
This in-depth, multi-part course takes you through evolutionary theory and mechanisms, from definitions to details, natural selection to genetic drift, mutations to punctuated equilibrium.

Evolutionary trees and patterns in the history of life
Scientists use many different lines of evidence to reconstruct the evolutionary trees that show how species are related.
This article is located within Evolution 101.

Mechanisms of evolution
Learn about the basic processes that have shaped life and produced its amazing diversity.
This article is located within Evolution 101.

Evolution at different scales: Micro to macro
Microevolution and macroevolution encompass change at very different scales, but both work through the same basic processes.

Phylogenetic systematics, a.k.a. evolutionary trees  Advanced
Learn about phylogenetic systematics, the study of the evolutionary relationships among organisms, and how the field is shaping biological research today.

Understanding evolutionary trees  Advanced
Many disciplines within biology (and many basic biology texts) have come to depend on evolutionary trees. Get the basics you need to understand and interpret these key diagrams.
This article appears at SpringerLink.

A name by any other tree
Phylogenetics has affected almost every area of biology - even the most basic one: how we classify organisms. Find out how phylogenetic classification works and what its advantages are.
This article appears at SpringerLink.

Evolution and the fossil record
Evolution is a fundamental concept in modern biology. Review the basics of how evolution works with a special focus on evidence and examples from the fossil record.
This article appears at the American Geological Institute website.

Webcast: Endless forms most beautiful
In lecture one of a four part series, evolutionary biologist Sean Carroll discusses Darwin and his two most important ideas: natural selection and common ancestry.
This lecture is available from Howard Hughes' BioInteractive website.

Discovering the great tree of life
This short video introduces basic concepts in phylogenetics and provides a model to help understand lineage-splitting.
This resource is available from the Peabody Museum of Natural History

Learn about the tree of life
This tutorial on phylogenetics explains the basics of tree-thinking and provides many examples from real organisms.
This resource is available from the Peabody Museum of Natural History

Evo in the news: Coping with climate change
This news brief from May 2009 explores the difference between phenotypic plasticity and evolutionary change in relation to the media's coverage of climate change.

Interview: Geerat Vermeij on the fossil record  Advanced
This interview with MacArthur Fellow and paleobiologist, Geerat Vermeij, covers much ground, including adaptations in the mollusks he studies, evolutionary arms races, punctuated equilibrium, extinctions, macroevolution, and the value of diversity.

Sub-topics (containing additional resources):

Evo-Devo , Examples of evolution , Genetics , History of life on Earth , Macroevolution , Microevolution , Natural selection , Speciation