Evolution | Definition, History, Types, & Examples | Britannica
5 days ago · 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
5 days ago · 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 …
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 …
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 …
evolution Facts | Britannica
Dec 30, 2025 · 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 …
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 - Theory, Cultural Impact, Science | Britannica
Jan 17, 2026 · In the words of Theodosius Dobzhansky, “Nothing in biology makes sense except in the light of evolution.” The term evolution and the general concept of change through time also have …
Evolution - Fossils, Species, Adaptation | Britannica
5 days ago · Evolution - Fossils, Species, Adaptation: Paleontologists have recovered and studied the fossil remains of many thousands of organisms that lived in the past. This fossil record shows that …
Evolution - Convergent, Parallel, Adaptation | Britannica
Jan 13, 2026 · Features that become more rather than less similar through independent evolution are said to be convergent. Convergence is often associated with similarity of function, as in the evolution …
Evolution - Molecular, Genetics, Species | Britannica
Jan 17, 2026 · If the rate of evolution of a protein or gene were approximately the same in the evolutionary lineages leading to different species, proteins and DNA sequences would provide a …