1.What kind of evolution do homologous structures indicate...

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1. What kind of evolution do homologous structures indicate?

2. What kind of evolution do analogous structures indicate?

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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

Speciation

Reproductive Isolation

Behavioral Isolation

Bonobo Chimpanzee

Geographic Isolation

Temporal Isolation

Speciation

Common Ancestor

Extinction

Adaptive Radiation

Punctuated Equilibrium

Divergent Evolution

Convergent Evolution

Cladograms

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