Learn the various meanings and uses of the word evolution, from biological to historical to mathematical contexts. See synonyms, examples, word history, and related phrases of evolution.

Learn how evolution is a scientific theory that explains how organisms change over time. Explore the history, evidence, and mechanisms of evolution, such as natural selection and genetic drift.

Biological evolution is the process of change and diversification of living things over time, and it affects all aspects of their lives—morphology (form and structure), physiology, behaviour, and ecology. Underlying these changes are changes in the hereditary materials.

Learn about the process by which human beings developed from now-extinct primates, and the fossil evidence that supports different theories and scenarios. Explore the human lineage, the timeline, the tree, the chart, and the questions of human evolution.

An introduction to evolution, explaining what it is and how it works, including mechanisms like selection, mutation, migration, and speciation.

Evolution 101. An introduction to evolution: what is evolution and how does it work? The history of life: looking at the patterns – Change over time and shared ancestors; Mechanisms: the processes of evolution – Selection, mutation, migration, and more; Microevolution – Evolution within a population; Speciation – How new species arise

In his book, Darwin describes how organisms evolve over generations through the inheritance of physical or behavioral traits, as National Geographic explains. The theory starts with the premise...

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Learn how natural selection, one of the basic mechanisms of evolution, works with examples and activities. Explore the history, misconceptions, and applications of natural selection in biology.