1. Natural Selection Lab By Jane Horlings
I’iwi, Hawaiian honeycreeper
Passenger pigeon, which became extinct in the early 1900s due to human hunting
Archaeopteryx fossil

2. History Ideas about evolution originated before Darwin Aristotle
Fossils
Jean Baptiste de Lamarck
Inheritance of acquired characteristics
Aristotle (UL), Ammonite fossil (UR), Lamarck (L)

3. History
Lamarck
Characteristics which an organism developed during its lifetime were inherited
Now known to be invalid

4. History Charles Darwin H.M.S. Beagle
South America & the Galapagos Islands
H.M.S. Beagle (U), Galapagos turtle (LL), Darwin at early age (LR)

5. History

6. History
Finches in the Galapagos

7. History Other scientists and research influenced Darwin’s theory
Charles Lyell: Principles of Geology
Lyell

8. History
Economist Thomas Malthus

9. History Alfred Russel Wallace
Wallace, early (R), and later in life (L)

10. History Darwin proposed that evolution occurs by natural selection
On the Origin of Species by Means of Natural Selection published in 1859

11. History Darwin's theory had four parts:
1. Organisms produce more offspring than can survive to reproductive age
2. Members of a population vary and some of these variations are heritable
Resources available to a population are limited
Organisms with the most favorable traits have differential reproductive success, and those traits are passed to the next generation

12. History The synthetic theory of evolution or Neo-Darwinism
Darwin (R), Mendel (L)

13. History
Darwin in cartoon from 1800s
Darwin died in 1882

14. Selection
Selection = when some individuals leave behind more offspring than others, and the rate at which they do so is affected by their inherited characteristics
Selection can be artificial or natural
Peppered moth

15. Selection
Artificial selection

16. Selection
Biotechnology / Genetic engineering

17. Selection Natural selection
Natural selection is the result of differential reproduction by members of a population
“Reproduction of the fittest!”

18. Selection
See? The offspring in the last generation now all have the gene allowing them to be resistant to the pesticide! This is a great example of selection!

19. End