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  2. Charles Darwin was a British naturalist who proposed the theory of biological evolution by natural selection. Darwin defined evolution as "descent with modification," the idea that species change over time, give rise to new species, and share a common ancestor.

  3. Oct 10, 2017 · This problem was decisively solved by Charles Darwin , whose theory of evolution by natural selection—in which heritable variations associated with greater survival and reproductive success are identified as being more likely to accumulate in natural populations—explained the adaptation of organisms in purely naturalistic, mechanical terms.

    • Andy Gardner
    • 10.1098/rsfs.2017.0005
    • 2017
    • Interface Focus. 2017 Oct 6; 7(5): 20170005.
  4. With the development of the modern evolutionary synthesis in the 1930s and 1940s, Darwin's concept of evolutionary adaptation through natural selection became central to modern evolutionary theory, and it has now become the unifying concept of the life sciences . Summary of Darwin's theory. Darwin pictured shortly before publication.

    • Charles Darwin
    • 1859
  5. In 1859, Charles Darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. He defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

  6. 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 breeding had demonstrated to Darwin that variations can be developed that are “useful to man.”