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- How does Evolution work?
- What's wrong, Sally?
- Really!?
- Yeah, so let's get started.
- I can help you with that.
- The theory of evolution is based on the idea that all species are related and gradually change over time.
- evolution is the change in the characteristics of a species over several generations and relies on natural selection
- But what is Natural Selection?
- Individuals with characteristics best suited to their environment are more likely to survive, finding food, avoiding predators and resisting disease. These individuals are more likely to reproduce and pass their genes on to their children.
- Charles Darwin’s theory of evolution states that evolution happens by natural selection.
- so, Individuals that are poorly adapted to their environment are less likely to survive and reproduce. Therefore their genes are less likely to be passed on to the next generation.
- Yeah, now you're getting it!!
- In the mid-1700s, the peppered moth was most commonly a pale whitish color with black spots. This coloring enabled them to hide from potential predators on trees with pale-colored bark, such as birch trees.
- The rarer dark-colored peppered moths were easily seen against the pale bark of trees and therefore more easily seen by predators.
- Let's talk abut the Peppered moth
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