1. Evidence of Evolution
Biogeography, Geology, and the Fossil Record

2. Biogeography
The study of where organisms live now andThe study of where organisms live now and
where they and their ancestors lived in the past.where they and their ancestors lived in the past.
Distantly RelatedDistantly Related
but Similarbut Similar
Closely Related buClosely Related bu
DifferentDifferent
Learning
Target #7

3. Radioactive DatingRadioactive Dating
Earth is 4.5 billionEarth is 4.5 billion oror
4,500,000,000 years old.4,500,000,000 years old.

4. FossilFossil
EvidenceEvidence
EvidenceEvidence

5. What is a fossil?What is a fossil?
Preserved remains or traces of ancient organisms.
http://www.nps.gov/joda/index.htm
Learning
Target #8

6. Vertebrate LimbsVertebrate Limbs
Same basic structure
with many different
functions.
HOMOLOGOUS
structures
VESTIGIAL
structures

7. Vertebrate LimbsVertebrate Limbs
Same basic structure
with many different
functions.
HOMOLOGOUS
structures
VESTIGIAL
structures
Structures shared by related
species that have been
inherited from a common
ancestor.
Structure that is inherited
from ancestors but has lost
much or its original function.
Learning
Target #9

8. How do we put all this evidence together?How do we put all this evidence together?