1. Evolution has left much evidence Ch. 14.2

2. The Fossil Record We use the past to help gather information about our present FOSSILS  –Found in _________ _______

3. In sedimentary rock, younger rock is found near the top layers, older rocks near the bottom –LAW OF SUPERPOSITION FOSSIL RECORD 

4. Fossils of ancestral life forms link the past and the present –i.e. whales evolving from land dwelling ancestors that had 4 limbs

5. Geographic Distribution Geographical distribution of organisms serve as a clue to how modern species may have evolved

6. Similarities in Structure Certain structural similarities provide clues to evolutionary history –i.e. forelimbs of all mammals have same skeletal parts however, __________ differs! HOMOLOGOUS STRUCTURES 

7. Evolution is a _________ process VESTIGIAL STRUCTURES 

8. Similarities in Development Embryos of closely related organisms have similar stages in development –i.e. all vertebrates __________________

9. Molecular Biology Comparing DNA sequences to relate to species Closer related have similar DNA, more differences in DNA show they don’t share a common ancestry