1. How did the scala naturaeorganize species?

2.How did Linnaeus organize species?

Charles Darwin

• Is not this…

Natural Selection

• INDIVIDUALS are “selected”

• “selected” means to survive AND REPRODUCE

• SPECIES/POPULATIONS evolve

Natural Selection

Darwin’s Influences - Hutton

Darwin’s Influences - Lyell

Darwin’s Influences - Malthus

Darwin’s Influences –Voyage of the HMS Beagle

Natural Selection

Biological Fitness – Pop Quiz

Who is more biologically fit?

Biological Fitness – Pop Quiz

Who is more biologically fit?

Biological Fitness – Pop Quiz

Who is more biologically fit?

Biological Fitness – Pop Quiz

Who is more biologically fit?

• INDIVIDUALS are “selected”

• “selected” means to survive AND REPRODUCE

• SPECIES/POPULATIONS evolve

Natural Selection

Adaptation

Natural Selection

4 Principles: Variation

4 Principles: Overproduction

4 Principles: Adaptation

4 Principles: Descent with Modification

Selective Pressures

• INDIVIDUALS are “selected”

• “selected” means to survive AND REPRODUCE

• SPECIES/POPULATIONS evolve

Natural Selection

Natural Selection

Darwin’s Finches

Darwin’s Finches

Darwin’s Finches

Darwin’s Finches

Darwin’s Finches

Darwin’s Finches

Darwin’s Finches

Darwin’s Finches

Darwin’s Finches

• INDIVIDUALS are “selected”

• “selected” means to survive AND REPRODUCE

• SPECIES/POPULATIONS evolve

Natural Selection