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Provide some of the evidence presented by Darwin from his voyage on the Beaglethat supports the...

Provide some of the evidence presented by Darwin from his voyage on the Beaglethat supports the theory of common descent.

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Provide some of the evidence presented by Darwin from his voyage on the Beaglethat supports the theory of common descent:

  • Charles Darwin commenced his journey on H.M.S Beagle and spent five years.
  • Based on Darwin's theory of common descent, all organisms descended or originated from a common ancestor.
  • Fossils and similarities between relative organisms
    • vestigial structure - bump-like thickening on the helix of the auricle (exterior ear) / ear bumps
    • finches of the Galapagos Islands
  • ancient organism remains
    • Fossils collected in South America
    • Glyptodon fragments that were similar to armadillos
    • Fossils collected from Falklands
    • Barchipod shell fossils
  • Similarities of embryos
    • similarities in embryonic development
  • Breeding - variations in domesticated plants and animals
  • Fossil layers - Darwin observed that fossils in older layers are more primitive than fossils present in upper layers.

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