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Evidence for evolution Testing evolutionary hypotheses
Life evolves! What is life? What is evolution? Evidence for evolution Testing evolutionary hypotheses 1
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What is Life? Discuss with your neighbors and write a consensus definition of LIFE. Log on to Learning Catalytics Session ID: Map your seat 2
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Early Evidence for Biological Evolution
Homology Fossil record Geological evidence
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Homology homologous structure of mammal limbs suggest descent from a common ancestor (Buffon, ) See also Fig 4
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Homology vs analogy University of California Museum of Paleontology (
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Testing predictions from evolutionary theory: are tetrapod limbs homologous?
University of California Museum of Paleontology (
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Fossil ancestral tetrapods have same limb structure
University of California Museum of Paleontology (
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Meet Ichthyostega 363 Mya
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And lobe-finned fish have similar bone structure
390 mya University of California Museum of Paleontology (
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Oh no! The fossil record has a gap!
Tiktaalik.uchicago.edu
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Where can we find exposed rocks of the right age and type?
Tiktaalik.uchicago.edu
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Tiktaalik, a transitional fossil predicted by evolutionary theory
Tiktaalik.uchicago.edu
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