Biology
Textbooks
Boundless Biology
Evolution and the Origin of Species
Understanding Evolution
Biology Textbooks Boundless Biology Evolution and the Origin of Species Understanding Evolution
Biology Textbooks Boundless Biology Evolution and the Origin of Species
Biology Textbooks Boundless Biology
Biology Textbooks
Biology
Concept Version 8
Created by Boundless

The Galapagos Finches and Natural Selection

Darwin's Finches

Darwin's Finches

Darwin observed that beak shape varies among finch species. He postulated that the beak of an ancestral species had adapted over time to equip the finches to acquire different food sources. This illustration shows the beak shapes for four species of ground finch: 1. Geospiza magnirostris (the large ground finch), 2. G. fortis (the medium ground finch), 3. G. parvula (the small tree finch), and 4. Certhidea olivacea (the green-warbler finch).

Source

    Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:

    "OpenStax College, Discovering How Populations Change. December 6, 2013."
    http://cnx.org/content/m45487/latest/ OpenStax CNX CC BY 3.0.

Related Terms

  • evolution
  • natural selection
  • Subjects
    • Accounting
    • Algebra
    • Art History
    • Biology
    • Business
    • Calculus
    • Chemistry
    • Communications
    • Economics
    • Finance
    • Management
    • Marketing
    • Microbiology
    • Physics
    • Physiology
    • Political Science
    • Psychology
    • Sociology
    • Statistics
    • U.S. History
    • World History
    • Writing

    Except where noted, content and user contributions on this site are licensed under CC BY-SA 4.0 with attribution required.