Evo evidence 16_4_part2

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Evo evidence 16_4_part2

  1. 1. Evidence of EvolutionBiogeography, Geology, and the Fossil Record
  2. 2. BiogeographyThe study of where organisms live now andThe study of where organisms live now andwhere they and their ancestors lived in the past.where they and their ancestors lived in the past.Distantly RelatedDistantly Relatedbut Similarbut SimilarClosely Related buClosely Related buDifferentDifferentLearningTarget #7
  3. 3. Radioactive DatingRadioactive DatingEarth is 4.5 billionEarth is 4.5 billion oror4,500,000,000 years old.4,500,000,000 years old.
  4. 4. FossilFossilEvidenceEvidenceEvidenceEvidence
  5. 5. What is a fossil?What is a fossil?Preserved remains or traces of ancient organisms.http://www.nps.gov/joda/index.htmLearningTarget #8
  6. 6. Vertebrate LimbsVertebrate LimbsSame basic structurewith many differentfunctions.HOMOLOGOUSstructuresVESTIGIALstructures
  7. 7. Vertebrate LimbsVertebrate LimbsSame basic structurewith many differentfunctions.HOMOLOGOUSstructuresVESTIGIALstructuresStructures shared by relatedspecies that have beeninherited from a commonancestor.Structure that is inheritedfrom ancestors but has lostmuch or its original function.LearningTarget #9
  8. 8. How do we put all this evidence together?How do we put all this evidence together?

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