1. Warm-up 2/22:
What is Struggle to Survive?
Give an Example.
Why is struggle to survive key to Natural Selection?
Give two examples of Evidence that scientist have to support evolution. (You should have learned some in middle school)
EVIDENCE OF EVOLUTION Chapter 15-2 Review of 15-3 Unit 8 Part 2: Notes #1

2. Evolution defined…
Evolution of a population is due to environment and the interaction of other species
Evolution acts on phenotype, not genotype

3. Speed Review: Examples of Evolution
Convergent evolution: Organisms with very different ancestors become more alike due to a common environment
Ex. fish and whales- compare analogous structures

4. Divergent evolution: populations become more and more dissimilar to adapt to the environment-compare homologous structures
Appearance of birds with different sized beaks that are specific for size of bird seed

6. Adaptive radiation
Population undergoes divergent evolution until it fills all areas of the environment

7. Co-evolution: as one species evolves another does (parasites and hosts)

8. EVIDENCE OF EVOLUTION New Notes
Chapter 15-2

9. Evolution defined… Evolution is a process of gradual modifications
Darwin called this descent with modification
Evolution of a population is due to environment and the interaction of other species
Evolution acts on phenotype, not genotype

10. Evolution defined… Evolution is a process of gradual modifications
Darwin called this descent with modification
Evolution of a population is due to environment and the interaction of other species
Evolution acts on phenotype, not genotype

11. Ancestor Organism 1 Organism 2
Many animals and plants shared common ancestors and deviated from that common ancestor overtime
Organism 1
Ancestor
Organism 2

12. Phylogenesis – the evolutionary development and diversification of a species or group of organisms
Phylogenic Tree

13. Fossils Fossils provide geologic evidence of evolution
Fossils in older layers are more primitive than those in the upper layers

14. Transitional Species:
Descent with modification states that newer
species are modified versions of older
species
- Fossil record contains the intermediates

15. Homework Finish: Making a Super Bug (Due Tuesday)
Evidence For Evolution Flipbook
Pages #1-#2 Due Wednesday
Page #3 Due Thursday
Pages #4-5 Due Friday
Pages # 6-7 Due Tuesday (3/1)

16. Homework Finish: Making a Super Bug (Due Tuesday)
Evidence For Evolution Packet
Paleontology p 1-2: Due Wednesday
Vestigial Structures & Homologous Structures p 3-6: Due Thursday
Embryology p Due Monday (2/29)
Evidence For Evolution Flipbook
Pages #1-#2 Due Wednesday
Page #3 Due Thursday
Pages #4-5 Due Friday
Pages # 6-7 Due Tuesday (3/1)

17. Warm-up 2/18
Class activity: Work on Whales in transition. (You have 15 min.) Mr. E will come and check for correctness so do a good job.
If you finish early you can work on you flipbook.

18. EVIDENCE OF EVOLUTION Continued
Chapter 15-2

19. Anatomy
Vestigial organs - a group of organs with no particular use now but may have been useful in ancestors (tailbone coccyx or hip bones in whales)

20. Anatomy cont.
Homologous Structures: body parts that are similar in structure may have different functions
Indicating at some point way in the past they did the same job and came from a common ancestor

21. Anatomy cont.
Analogous Structures: same functions but different development
ex. a butterfly wing and a bat wing
Indicates that populations evolved to be better suited to the environment

22. Biogeography
Certain animals in one location share similar traits (I.E. marsupials in Australia)

23. Embryology
Similar likenesses in embryos of organisms is evidence of descent with modification

24. Biological Molecules DNA  RNA Proteins
Similar proteins means similar DNA
The longer it’s been since they shared a common ancestor the more differences in protein

25. Homework Finish: Making a Super Bug (Due Tuesday)
Evidence For Evolution Packet
Paleontology p 1-2: Due Wednesday
Vestigial Structures & Homologous Structures p 3-6: Due Thursday
Embryology p Due Monday (2/29)
Evidence For Evolution Flipbook
Pages #1-#2 Due Wednesday
Page #3 Due Thursday
Pages #4-5 Due Friday
Pages # 6-7 Due Tuesday (3/1)

26. Classwork/Homework Evidence for Evolution flipbook. Due Friday
We will also have a quiz on Friday.