Evolution of Living Things• Who is responsible?• How does it happen• How do we know

A: Charles Darwin

1: Was…

2: Went…

3: Observed…

4: Concluded…

I: Who is responsible?

2 big ideas of evolution• Evolution = Change in

allele frequency over time

• Individuals do not evolve, species do.

• Species = groups of organisms that can interbreed and produce fertile offspring.

II: What’s the big deal?

A: 4 steps to evolution by natural selection1. Variation2. Overproduction of

offspring3. Struggle for

existence4. Differential

survival and reproduction

III: How does it Happen: natural selection

1. Peppered moths

2. Newts and snakes

3. Antibiotic resistant microbes

1. Background info2. Current status (part one)

4. Nylon eating bacteria

5. Amazon ant farmers

6. Darwin’s finches

7. Humming bird beaks

8. Eye evolution

9. Corpse flower

10.Male peacocks tail display

B: Specific cases of Natural selection

C: 2 ways to introduce variation

1: Mutations 2: Sexual reproduction

IV: How do we know: 4 categories of evidence to support common ancestor

A: Structural Evidence

Homologous structures = similar structure but different purpose

Analogous structures= different structure but similar purpose

Vestigial structures= left overs from common ancestry

Homologous structures

Structural evidence continued

Vestigial Structures Analogous Structures

Evidence continued

C: Fossil Record: Whale evolution

D: Embryology: common pasts different paths

Evidence Continued…

Biochemical evidence

All life is based off same DNA code (A, T, C, G)

Many conserved proteins (polymerase, ATP synthase, ubiquitin)

Hox genes