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Evolution - Wikipedia In the longer term, evolution produces new species through splitting ancestral populations of organisms into new groups that cannot or will not interbreed These outcomes of evolution are distinguished based on time scale as macroevolution versus microevolution
Evolution | Definition, History, Types, Examples | Britannica 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 in successive generations
Theory of Evolution - National Geographic Society Darwin and a scientific contemporary of his, Alfred Russel Wallace, proposed that evolution occurs because of a phenomenon called natural selection In the theory of natural selection, organisms produce more offspring than are able to survive in their environment
Evolution - Natural Selection, Adaptation, Genetics | Britannica Evolution can be seen as a two-step process First, hereditary variation takes place; second, selection is made of those genetic variants that will be passed on most effectively to the following generations
Introduction to evolution - Wikipedia Evolution is the principal scientific theory that biologists use to understand life and is used in many disciplines, including medicine, psychology, conservation biology, anthropology, forensics, agriculture and other social-cultural applications
Evolution 101 What is evolution and how does it work? Evolution 101 provides the nuts-and-bolts on the patterns and mechanisms of evolution You can explore the following sections:
Understanding Evolution – Your one-stop source for information on evolution 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
evolution | Learn Science at Scitable - Nature Evolution is a process that results in changes in the genetic material of a population over time Evolution reflects the adaptations of organisms to their changing environments and can result in