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8 Cards in this Set
- Front
- Back
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What is the cell theory?
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All organisms are made of cells, and all cells come from preexisting cells.
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What is the theory of evolution by natural selection?
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Maintained that species have changed through time and that all species are related to one another through common ancestry.
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Define cell
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A cell is a highly organized compartment that is bounded by a thin,flexibe structure called a plasma membrane and that contains concentrated chemicals in a watery solution.
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Two components of most scientific theories
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The first describes a pattern in the natural world, the second identifies a mechanism or process that is responsible for creating that pattern.
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Define Population
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A group of individuals of the same species living in the same area at the same time.
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Define Fitness
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The ability of an individual to produce offspring
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Define an adaptation
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A trait that increases the fitness of an individual in a particular environment.
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what is a phylogenetic tree?
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It shows relationships among species. Branches close to another represent species that are closely related-branches further apart represent species that are more distantly related.
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