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Evolution - Wikipedia The scientific theory of evolution by natural selection was conceived independently by two British naturalists, Charles Darwin and Alfred Russel Wallace, in the mid-19th century as an explanation for why organisms are adapted to their physical and biological environments
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
An introduction to evolution Evolution helps us to understand the living world around us, as well as its history Biological evolution is not simply a matter of change over time
Theory of Evolution - Education 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
What is evolution? | Biological Principles - gatech. edu Because the definition of evolution is change in the heritable characteristics of a population over generations, evolution can occur by means other than natural selection
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
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:
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