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      • After a variety of zoological discoveries Wallace proposed a theory of evolution, which matched Darwin's unpublished ideas that he had kept secret for nearly 20 years. This encouraged Darwin to collect his scientific ideas and collaborate with Wallace. They published their scientific ideas jointly in 1858.
      www.bbc.co.uk/bitesize/guides/zgq96yc/revision/7

      Darwin and Wallace - How was the theory of evolution ... - BBC

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  3. evolution.berkeley.edu › the-history-ofNatural Selection: Charles Darwin & Alfred Russel Wallace

    Wallace supplied Darwin with birds for his studies and decided to seek Darwin’s help in publishing his own ideas on evolution. He sent Darwin his theory in 1858, which, to Darwin’s shock, nearly replicated Darwin’s own.

  4. bio.libretexts.org › Bookshelves › Human_Biology9.2: Darwin, Wallace, and the Theory of Evolution by Natural ...

    How did Alfred Russel Wallace contribute to the theory of evolution by natural selection? Apply Darwin’s theory of evolution by natural selection to a specific case. For example, explain how Galápagos tortoises could have evolved saddle-shaped shells.

  5. bio.libretexts.org › Courses › Evergreen_Valley4.1: Darwin, Wallace, and the Theory of Natural Selection

    Aug 15, 2023 · The actual mechanism for evolution was independently conceived of and described by two naturalists, Charles Darwin and Alfred Russell Wallace, in the mid-nineteenth century. Importantly, each spent time exploring the natural world on expeditions to the tropics.

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  7. bio.libretexts.org › Bookshelves › Introductory_and18.1B: Charles Darwin and Natural Selection - Biology LibreTexts

    Oct 31, 2023 · Charles Darwin and Alfred Wallace independently developed the theories of evolution and its main operating principle: natural selection. Learning Objectives Explain how natural selection can lead to evolution

  8. education.nationalgeographic.org › resource › theoryTheory of Evolution - Education

    Oct 19, 2023 · 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.

  9. www.nationalgeographic.org › alfred-wallaceAlfred Wallace - National Geographic Society

    Oct 19, 2023 · The theory of evolution by natural selection became known as Darwin’s theory. Though Wallace’s contributions to the study of evolution were considerable, they are often forgotten. Wallace spent eight years studying and collecting biological specimens in Southeast Asia.

  10. www.bbc.co.uk › bitesize › guidesDarwin and Wallace - How was the theory of evolution ... - BBC

    After a variety of zoological discoveries Wallace proposed a theory of evolution, which matched Darwin's unpublished ideas that he had kept secret for nearly 20 years. This encouraged...