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1. What kind of evolution do homologous structures indicate?
2. What kind of evolution do analogous structures indicate?
• Pass forward your Great Transformations Video Questions now!
Evidence for Evolution
• Homologous
• Divergent evolution: closely related species evolving different characteristics (Away from each other)
• Analogous
• Convergent evolution: similar characteristics developing in unrelated species
Evidence for Evolution
Cetacean Evolution• Analysis #4
1. Restate your claim
2. One piece of evidence
3. Support that claim with that evidence by:
• Giving the specific significant traits of the evidence
• How those traits demonstrate the claim
4. Repeat
Cetacean Evolution• Any questions?
• Video:
• https://www.youtube.com/watch?v=FE49xEU_z7g
• Fossils
• Biogeography
• Embryology
• Homologous structures
• Analogous structures
• Vestigial structures
• Gene comparisons
• Protein comparisons
Evidence
Species
Species
Speciation
Speciation
Reproductive Isolation
Reproductive Isolation
Behavioral Isolation
Behavioral Isolation
Behavioral Isolation
Bonobo Chimpanzee
Geographic Isolation
Geographic Isolation
Temporal Isolation
Temporal Isolation
Speciation
Common Ancestor
Common Ancestor
Common Ancestor
Common Ancestor
Extinction
Adaptive Radiation
Punctuated Equilibrium
Punctuated Equilibrium
Divergent Evolution
Convergent Evolution
Cladograms
Cladograms
Cladograms
Cladograms
Cladograms
Cladograms
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