1. Evidence of the Evolutionary Theory

2. Types of Evidence for Darwin’s Theory
Fossil
Anatomical
Embryological
Biochemical

3. 1. Fossil Evidence
Based on the position of the fossil in the dirt column, we can determine which organism existed first on Earth and which organisms came later
This fish fossil was found in Kansas!

4. 2. Anatomical Evidence Homologous Structures Analogous Structures
Vestigial Structures

5. Homologous structures
Features with a common evolutionary origin but may have a different function

6. Analogous structures
Structures that have similar functions but different evolutionary origin

7. Vestigial structure
Structures found in a present-day organism that no longer serves its original purpose.

8. 3. Embryological
Features in young embryos suggest evolution from a distant, common ancestor

9. 4. Biochemistry
DNA evidence (genetics) – organisms that are biochemically similar have fewer differences in their DNA share a common ancestry.