Natural and Artificial selection
Natural Selection
Process where organisms better adapted to their environment tend to survive and produce more offspring.
Key components include variation in traits, competition for resources, and differential reproduction.
It acts on existing variations within a population.
Example: The evolution of the peppered moth in response to industrial pollution in England.
Artificial Selection
Human-directed breeding of organisms for specific desired traits.
Involves choosing which individuals to reproduce based on their traits.
It can lead to rapid changes in a species that might not occur via natural selection.
Example: Selective breeding of dogs for size, coat type, and temperament.