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Natural Selection

Natural Selection Stations

TermDefinition
What are two different things that influenced Darwin's work? The work of farmers and breeders and Artificial selection
What is artificial selection? The process by which humans change a species by breeding it for certain traits
In order for Artificial Selection to occur... The trait must be heritable
What is heritability? The ability of a trait to be inherited, or passed down from one generation to the next
Darwin extended the ideas he gained from studying from artificial selection to what? Natural Selection
What is Natural Selection? A process which individuals that have inherited beneficial adaptations produce more offspring on average than do other individuals
What is the selective agent in natural selection? The environment
What four principles is natural selection based on? Overproduction, Variation, Adaptation, and Descent with Modification
What is overproduction? Producing more offspring than are likely to survive
What is variation? The heritable differences that exist in every population
What is adaptation? A certain characteristic that allows an individual to survive better than other individuals it competes against for resources
What is descent with modification? The spread of an adaptation throughout new generations
What does natural selection work on rather than genetic material itself. Physical traits
Natural selection can act only on traits that already... exist in a population
The term fitness means a measure of the ability to survive and produce more offspring relative to other members of the population in a given environment.
Created by: ferguslr
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