Yahoo Web Search

Search results

  1. People also ask

  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 19, 2023 · Natural selection is the process through which species adapt to their environments. It is the engine that drives evolution. Grades. 8 - 12. Image. On the Origin of Species. English naturalist Charles Darwin wrote the definitive book outlining his idea of natural selection, On the Origin of Species.

  4. 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.
  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. He postulated that ancestral species’ beaks had adapted over time to equip the finches to acquire different food sources. Wallace and Darwin both observed similar patterns in other organisms and they independently developed the same explanation for how and why such changes could take place. Darwin called this mechanism natural selection.

  7. Evolution - Natural Selection, Adaptation, Genetics: The central argument of Darwins 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.”