Natural Selection and Evolution. Objectives Students will be able to- – Explain the theory of...
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![Page 1: Natural Selection and Evolution. Objectives Students will be able to- – Explain the theory of natural selection – Apply the theory of natural selection.](https://reader031.fdocuments.us/reader031/viewer/2022020800/56649d4e5503460f94a2e18b/html5/thumbnails/1.jpg)
Natural Selection and Evolution
![Page 2: Natural Selection and Evolution. Objectives Students will be able to- – Explain the theory of natural selection – Apply the theory of natural selection.](https://reader031.fdocuments.us/reader031/viewer/2022020800/56649d4e5503460f94a2e18b/html5/thumbnails/2.jpg)
Objectives
• Students will be able to-– Explain the theory of natural selection– Apply the theory of natural selection to
hypothetical situations.– Identify frog and amphibian similarities to other
species.
![Page 3: Natural Selection and Evolution. Objectives Students will be able to- – Explain the theory of natural selection – Apply the theory of natural selection.](https://reader031.fdocuments.us/reader031/viewer/2022020800/56649d4e5503460f94a2e18b/html5/thumbnails/3.jpg)
Did you see any animal variation at the Zoo? Why do you think there was so
much of it?
![Page 4: Natural Selection and Evolution. Objectives Students will be able to- – Explain the theory of natural selection – Apply the theory of natural selection.](https://reader031.fdocuments.us/reader031/viewer/2022020800/56649d4e5503460f94a2e18b/html5/thumbnails/4.jpg)
Did you see any animal variation at the Zoo? Why do you think there was so
much of it?
Animals are suited to their environment.
![Page 5: Natural Selection and Evolution. Objectives Students will be able to- – Explain the theory of natural selection – Apply the theory of natural selection.](https://reader031.fdocuments.us/reader031/viewer/2022020800/56649d4e5503460f94a2e18b/html5/thumbnails/5.jpg)
What do you know about the following terms?
• Natural Selection-
• Adaptation-
• Population-
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Population
• Population- Individuals species that live together in one place at one time and can interbreed.
![Page 7: Natural Selection and Evolution. Objectives Students will be able to- – Explain the theory of natural selection – Apply the theory of natural selection.](https://reader031.fdocuments.us/reader031/viewer/2022020800/56649d4e5503460f94a2e18b/html5/thumbnails/7.jpg)
Natural Selection
• The process by which individuals that have favorable variations, and are better adapted to their environment, survive and reproduce more successfully than less well adapted individuals.
![Page 8: Natural Selection and Evolution. Objectives Students will be able to- – Explain the theory of natural selection – Apply the theory of natural selection.](https://reader031.fdocuments.us/reader031/viewer/2022020800/56649d4e5503460f94a2e18b/html5/thumbnails/8.jpg)
Adaptation
• An inherited trait that has become common in population because the trait has provided a selective advantage.
![Page 9: Natural Selection and Evolution. Objectives Students will be able to- – Explain the theory of natural selection – Apply the theory of natural selection.](https://reader031.fdocuments.us/reader031/viewer/2022020800/56649d4e5503460f94a2e18b/html5/thumbnails/9.jpg)
Question/Example
• In a natural frog population, the skin color varies from red to blue to green. None of the frogs are poisonous, but there are a lot of predators in the area. The surrounding are is covered with green plants. Who is most likely to survive?
![Page 10: Natural Selection and Evolution. Objectives Students will be able to- – Explain the theory of natural selection – Apply the theory of natural selection.](https://reader031.fdocuments.us/reader031/viewer/2022020800/56649d4e5503460f94a2e18b/html5/thumbnails/10.jpg)
Question/Example
• In a natural frog population, the skin color varies from red to blue to green. None of the frogs are poisonous, but there are a lot of predators in the area. The surrounding are is covered with green plants. Who is most likely to survive?
![Page 11: Natural Selection and Evolution. Objectives Students will be able to- – Explain the theory of natural selection – Apply the theory of natural selection.](https://reader031.fdocuments.us/reader031/viewer/2022020800/56649d4e5503460f94a2e18b/html5/thumbnails/11.jpg)
Question
• If natural selection is the reason behind successful adaptations, why don’t beavers have chainsaws?
![Page 12: Natural Selection and Evolution. Objectives Students will be able to- – Explain the theory of natural selection – Apply the theory of natural selection.](https://reader031.fdocuments.us/reader031/viewer/2022020800/56649d4e5503460f94a2e18b/html5/thumbnails/12.jpg)
Question
• If natural selection is the reason behind successful adaptations, why don’t beavers have chainsaws?
![Page 13: Natural Selection and Evolution. Objectives Students will be able to- – Explain the theory of natural selection – Apply the theory of natural selection.](https://reader031.fdocuments.us/reader031/viewer/2022020800/56649d4e5503460f94a2e18b/html5/thumbnails/13.jpg)
Genetic Variation
• There has to be variation that can be inherited in order for Natural selection to take place.
• If a population happens to have the genetic variation that allows some individuals to survive a particular challenge better than
others, then those individuals will have more offspring in the next generation