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Evolution is the change in inherited traits that occurs in a group of organisms over multiple generations. Inherited traits are those that are passed from parents to offspring via genes. Evolution is made possible by genetic variation, or gene differences, in a population. Genetic variation causes organisms within a population to have a range ...
Evo 101. Mechanisms: the processes of evolution. Evolution is the process by which modern organisms have descended from ancient ancestors. Evolution is responsible for both the remarkable similarities we see across all life and the amazing diversity of that life — but exactly how does it work? Here, we’ll find out.
Evolution is not the same as adaptation or natural selection. Remember: natural selection is a cause of evolution. Terms like “progress” or “improvement” are not a part of the definition of evolution because evolution is context dependent. Imagine a scenario where one trait might be highly advantageous in one environment, but highly ...
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Evolution and Natural Selection. Nature encourages no looseness, pardons no errors. - Ralph Waldo Emerson. I have called this principle, by which each slight variation, if useful, is preserved, by the term Natural Selection. - Charles Darwin, The Origin of Species. 10 Oct 2010. Format for printing.
Tree thinking, or phylogenetics, is an important way of understanding evolutionary relationships. Reading trees correctly can pose some challenges. This video introduces the basics of three reading and addresses common problems in tree reading. This resource is available from the National Evolutionary Synthesis Center. View details ».
Charles Darwin, (born Feb. 12, 1809, Shrewsbury, Shropshire, Eng.—died April 19, 1882, Downe, Kent), British naturalist. The grandson of Erasmus Darwin and Josiah Wedgwood, he studied medicine at the University of Edinburgh and biology at Cambridge. He was recommended as a naturalist on HMS Beagle, which was bound on a long scientific survey ...
