SB5. Students will evaluate the role of natural selection in the development of the theory of evolution. 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.

Photosynthesis Changed Everything!

By 2.4 BYA, isotopic evidence indicates that photosynthesis was widespread by this time.

Photosynthesis Changed 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.

Photosynthesis Changed 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 O 2 with nutrients.

Photosynthesis Changed 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 O 2 with nutrients. Referred to as burning food for energy!

Photosynthesis Changed Everything! Chloroplasts and Mitochondria are thought to have once been….

Photosynthesis Changed Everything! Chloroplasts and Mitochondria are thought to have once been…. Free living organisms!

Endosymbiont Theory The Evidence

Both mitochondria and Chloroplasts have two membranes

Endosymbiont Theory The Evidence Both mitochondria and Chloroplasts have two membranes

Endosymbiont Theory The Evidence Both mitochondria and Chloroplasts have two membranes Both have their own genome.

Endosymbiont Theory The 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 Theory The 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 Theory The Motive

Mitochondria allowed host organisms to survive by capturing and locking up toxic oxygen.

Endosymbiont Theory The 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 Theory The 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

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

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?