confidence in the fact of evolution
DESCRIPTION
CONFIDENCE IN THE FACT OF EVOLUTION. RESTS UPON THREE GREAT CLASSES OF INFORMATION – ACCORDING TO GOULD. SMALL SCALE/ SHORT TERM CHANGES. CHANGES WE CAN SEE DURING A LIFETIME DIRECTLY OBSERVABLE. PESTICIDE RESISTANCE. PEPPERED MOTH. BACTERIA RESISTANCE TO ANTIBIOTICS. EX MERSA METHACILLIN - PowerPoint PPT PresentationTRANSCRIPT
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CONFIDENCE IN THE FACT OF EVOLUTION
RESTS UPON THREE GREAT CLASSES OF INFORMATION – ACCORDING TO
GOULD
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SMALL SCALE/ SHORT TERM CHANGES
• CHANGES WE CAN SEE DURING A LIFETIME• DIRECTLY OBSERVABLE
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PESTICIDE RESISTANCE
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PEPPERED MOTH
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BACTERIA RESISTANCE TO ANTIBIOTICS
• EX MERSA• METHACILLIN• RESISTANT• STAPHYLOCOCCUS• AUREUS
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ARTIFICIAL SELECTION
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TOLERANCE IN PLANTS AND ANIMALS
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DANDELION HEIGHT
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LARGE SCALE/LONG TERM CHANGES
• CHANGES THAT TAKE PLACE OVER TENS OF THOUSANDS, HUNDREDS OF THOUSANDS, MILLIONS, TENS OF MILLIONS, HUNDREDS OF MILLIONS, AND BILLIONS OF YEARS
• WE CANNOT POSSIBLE OBSERVE THESE CHANGES, BUT WE CAN INFER THEM FROM THE EVIDENCE
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FISH TO AMPHIBIAN
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REPTILE TO MAMMAL
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REPTILE TO BIRD
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WHALE EVOLUTION
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SIGNS OF HISTORY PRESERVED IN LIVING THINGS AND ECOSYSTEMS
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HUMAN VESTIGIAL STRUCTURES
• TAILBONE• APPENDIX• EAR WIGGLE• NICTITATING MEMBRANE• WEBBING IN FINGERS AND TOES• WISDOM TEETH• ……….
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VESTIGIAL STRUCTURES IN WHALES
• Hind limbs• Finger muscles• Diaphragm• Ear canal that leads to no external ear• ….
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VESTIGES IN SNAKES
• HIPS, LEGS IN PYTHONS, BOAS
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EVIDENCE OF HISTORY IN ECOSYSTEMS
• COAL IN ANTARCTICA• SEA FOSSILS IN DESERT REGIONS• SEA FOSSILS ON MOUNTAIN TOPS• LAND FOSSILS ON SEA FLOOR• …..• DUE TO CONTINENTAL DRIFT