1. Evolutionary Evidence
Fossil record
Comparative anatomy
Comparative Embryology
Comparative Biochemistry
Geographic distribution

2. Fossil Record Remains of once living organisms.
Found in sedimentary rock.
Simpler forms of life at bottom.
Limited:
Type of material preserved (bone, shell, impressions, amber)
Incomplete record
Easily disrupted

4. Comparative Anatomy
Homologous structures
Vestigial structures

5. Homologous Structures

6. Vestigial Structures Human Salamander, Whale, Boa
Functional limb on salamander is probably
Similar to the limb of common ancestor.

7. Comparative Embryology (Early 1800’s)
2006 UCBerkeley

8. Chick Embryo vs. Human Notice the human embryo has gill slits.
2006 UCBerkeley
Notice the human embryo has gill slits.

9. Comparative Biochemistry
Similar DNA Sequences
Similar Gene segments
of the DNA
Code for similar traits in closely related species

10. Similar DNA In Organisms
DNA Sequencing- 0.1% difference between any person.
- 1.5% between human and chimp. .
2006 UCBerkeley