Chapter 13 Section 2

Download Report

Transcript Chapter 13 Section 2

Evidence of Evolution
Preserved or mineralized remains or imprint
of an organism
Found in sedimentary rock
Shows, what some to believe are,
intermediates between current species
Vestigal Structures
◦ Structures with little or no know use
 Appendix, whale pelvis, eyes in blind cave salamanders
◦ Similar design in
structures that now
have different
Proteins such as hemoglobin are similar in
closer related species
DNA is closely related to protein production,
thus in species with a common ancestor
share more DNA similarity
DNA similarities parallel the proposed
ancestry based on anatomy and the fossil
Through artificial selection we have created
organisms that look and act differently than
distant ancestors
◦ Dogs
◦ Cats
◦ Cattle
If we can do it artificially could it happen