1. Evolution & Natural Selection (5.1-5.2)
IB Diploma Biology

8. Pentadactyl Limbs Walk or crawl on land / Hind legs used for swimming
Organism (type)
Function of pentadactly limb
Crocodile (reptile)
Walk or crawl on land / Hind legs used for swimming
Penguin (bird)
Hind limbs for walking / forelimbs for swimming
Echidna (mammal)
All four limbs used for walking / Forelimbs for digging
Frog (amphibian)
All four limbs used for walking / Hindlimbs for jumping

9. Speciation

10. Evidence from Patterns of Geographical Variation

30. The Finches of Daphne Major

40. Bibliography / Acknowledgments
Jason de Nys
Chris Paine