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