Question

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

Answer 1

Answer:

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.