sb5. students will evaluate the role of natural selection in the development of the theory of...
TRANSCRIPT
• SB5. Students will evaluate the role of natural selection in the development of the theory ofevolution.
• b. Explain the history of life in terms of biodiversity, ancestry, and the rates of evolution.
• c. Explain how fossil and biochemical evidence support the theory.
• d. Relate natural selection to changes in organisms.
Our Place in Time
Our Place in TimeEarth Forms- 4.5 BYA
Our Place in Time
First ‘Cells’- 3.5 BYA
Our Place in Time
First ‘Cells’- 3.5 BYA
First Bacteria- 3.2 BYA
Our Place in Time
First ‘Cells’- 3.5 BYA
First Bacteria- 3.2 BYA
First Photosyn-thetic Organ-isms- 2.5 BYA
Our Place in Time
First ‘Cells’- 3.5 BYA
First Bacteria- 3.2 BYA
First Photosyn-thetic Organ-isms- 2.5 BYA
First Eu-karyotes- 1.2 BYA
Our Place in Time
First ‘Cells’- 3.5 BYA
First Bacteria- 3.2 BYA
First Photosyn-thetic Organ-isms- 2.5 BYA
First Eu-karyotes- 1.2 BYA
First Protozoans-800 MYA
Our Place in Time
Precambrian-4.03 Billion Years
Age of Invertebrates'-132 Mil-lion Years
Age of Fishes'-78 Million Years
Age of Amphibians'-115 Million Years
Age of Reptiles'-180 Million Years
Age of Mammals'- 63.4 Million Years
Humans Present-1.6 Million Years
Our Place in Time
Precambrian-4.03 Billion Years
Age of Invertebrates'-132 Mil-lion Years
Age of Fishes'-78 Million Years
Age of Amphibians'-115 Million Years
Age of Reptiles'-180 Million Years
Age of Mammals'- 63.4 Million Years
Humans Present-1.6 Million Years
570 Million Years
Our Place in Time
First ‘Cells’- 3.5 BYA
First Bacteria- 3.2 BYA
First Photosyn-thetic Organ-isms- 2.5 BYA
PhotosynthesisChanged Everything!
PhotosynthesisChanged Everything!
• By 2.4 BYA, isotopic evidence indicates that photosynthesis was widespread by this time.
PhotosynthesisChanged Everything!
• By 2.4 BYA, isotopic evidence indicates that photosynthesis was widespread by this time.
• Changes in the atmosphere forced a ‘wave’ of adaptive radiation in organisms to deal with toxic oxygen.
PhotosynthesisChanged Everything!
• By 2.4 BYA, isotopic evidence indicates that photosynthesis was widespread by this time.
• Changes in the atmosphere forced a ‘wave’ of adaptive radiation in organisms to deal with toxic oxygen.
• Mitochondria- Allow cells to utilize oxygen by combining O2 with nutrients.
PhotosynthesisChanged Everything!
• By 2.4 BYA, isotopic evidence indicates that photosynthesis was widespread by this time.
• Changes in the atmosphere forced a ‘wave’ of adaptive radiation in organisms to deal with toxic oxygen.
• Mitochondria- Allow cells to utilize oxygen by combining O2 with nutrients.
• Referred to as ‘burning’ food for energy!
PhotosynthesisChanged Everything!
• Chloroplasts and Mitochondria are thought to have once been….
PhotosynthesisChanged Everything!
• Chloroplasts and Mitochondria are thought to have once been….
• Free living organisms!
Endosymbiont TheoryThe Evidence
Endosymbiont TheoryThe Evidence
• Both mitochondria and Chloroplasts have two membranes
Endosymbiont TheoryThe Evidence
• Both mitochondria and Chloroplasts have two membranes
Endosymbiont TheoryThe Evidence
• Both mitochondria and Chloroplasts have two membranes
• Both have their own genome.
Endosymbiont TheoryThe Evidence
• Both mitochondria and Chloroplasts have two membranes
• Both have their own genome.• Genomes of both include circular ‘plasmids’-
very similar to bacterial plasmids.
Endosymbiont TheoryThe Evidence
• Both mitochondria and Chloroplasts have two membranes
• Both have their own genome.• Genomes of both include circular ‘plasmids’-
very similar to bacterial plasmids.• Why?
Endosymbiont TheoryThe Motive
Endosymbiont TheoryThe Motive
• Mitochondria allowed host organisms to survive by capturing and locking up toxic oxygen.
Endosymbiont TheoryThe Motive
• Mitochondria allowed host organisms to survive by capturing and locking up toxic oxygen.
• Chloroplasts-(actually early photosynthetic algae) produced food for themselves and their host. The host provided some measure of protection from predatory heterotrophs.
Endosymbiont TheoryThe Motive
• Mitochondria allowed host organisms to survive by capturing and locking up toxic oxygen.
• Chloroplasts-(actually early photosynthetic algae) produced food for themselves and their host. The host provided some measure of protection from predatory heterotrophs.
• Thought to be the origin of eukaryotic cells.
Plate Tectonics
Plate Tectonics• Theory that describes the motion of large scale
land masses.
Plate Tectonics• Theory that describes the motion of large scale
land masses.• Builds on the idea of ‘Continental Drift’.
Plate Tectonics• Theory that describes the motion of large scale
land masses.• Builds on the idea of ‘Continental Drift’.• Responsible for the formation and reformation
of the continents as we know them…
Plate Tectonics• Theory that describes the motion of large scale
land masses.• Builds on the idea of ‘Continental Drift’.• Responsible for the formation and reformation
of the continents as we know them…• They have NOT always been as they are now!!!
Plate Tectonics
Plate Tectonics
• How did geology influence the evolution of the organisms found along the Georgia coast?
• How did geology influence the evolution of the organisms found along the Georgia coast?
• How does sediment or substrate factor in?
• How did geology influence the evolution of the organisms found along the Georgia coast?
• How does sediment or substrate factor in?
• In what ways has water influenced evolution?