1. Evidence of Evolution November 3 & 4

2. Do Now Take your seat Jot down the four main evidences of evolution – I’ll be coming around to give you a 5-point classwork grade on this!

3. Evidences of Evolution Fossils Anatomy Molecular evidence Comparative embryology

4. Molecular Evidence DNA is a code made of 4 letters All organisms use DNA This suggests life had one origin!!

5. Molecular Evidence We can use similarities in DNA to understand evolutionary relationships between animals

6. Are whales more closely related to pigs, hippos, cows or rhinos? Let’s check out the molecular evidence!

7. 7 DNA Analysis Compare segments of beta - casein gene

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10. 10 DNA Differences

11. 11 DNA Differences

12. HIPPOS are whales’ closest living relative Hippos and whales shared a common ancestor 55 million years ago

13. Anatomical Evidence

14. Anatomy Homologous structures: Structures that are similar because they are inherited from the same ancestor Analogous structures: Structures that have a similar function but are NOT inherited from a shared ancestor Vestigial structures: structures that are not currently helpful to an organism but were useful to an ancestor

15. What is the evolutionary history of whales? Let’s check out the fossils!!