Evolution | Definition, History, Types, & Examples | Britannica
Feb 6, 2026 · Evolution, theory in biology postulating that the various types of living things on Earth have their origin in other preexisting types and that the distinguishable differences are due to modifications …
Evolution - Natural Selection, Adaptation, Genetics | Britannica
Feb 6, 2026 · Evolution - Natural Selection, Adaptation, Genetics: The central argument of Darwin’s theory of evolution starts with the existence of hereditary variation. Experience with animal and plant …
Evolution - Darwin, Natural Selection, Genetics | Britannica
Feb 6, 2026 · Darwin accumulated evidence showing that evolution had occurred, that diverse organisms share common ancestors, and that living beings have changed drastically over the course …
Biology - Evolution, Natural Selection, Adaptation | Britannica
Jan 12, 2026 · A complete theory of evolution was not announced, however, until the publication in 1859 of Charles Darwin’s On the Origin of Species by Means of Natural Selection or the Preservation of …
Biology - Evolution, Genetics, Species | Britannica
Jan 12, 2026 · Evidence to support the theory of evolution has come primarily from the fossil record, from comparative studies of structure and function, from studies of embryological development, and …
Evolution - Theory, Cultural Impact, Science | Britannica
Feb 6, 2026 · This degree of certainty beyond reasonable doubt is what is implied when biologists say that evolution is a “fact”; the evolutionary origin of organisms is accepted by virtually every biologist. …
Human evolution | History, Stages, Timeline, Tree, Chart, & Facts ...
Jan 25, 2026 · See the article evolution for a full explanation of evolutionary theory, including its main proponents both before and after Darwin, its arousal of both resistance and acceptance in society, …
Life - Evolution, History, Earth | Britannica
Jan 21, 2026 · Darwin’s principle of evolution is summarized by the following facts. All life tends to increase: more organisms are conceived, born, hatched, germinated from seed, sprouted from …
Evolution - Species, Speciation, Adaptation | Britannica
Jan 17, 2026 · Evolution - Species, Speciation, Adaptation: Darwin sought to explain the splendid multiformity of the living world—thousands of organisms of the most diverse kinds, from lowly worms …
Charles Darwin | Biography, Education, Books, Theory of Evolution ...
Feb 15, 2026 · Charles Darwin’s theory of evolution had three main components: that variation occurred randomly among members of a species; that an individual’s traits could be inherited by its progeny; …