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18 Cards in this Set
- Front
- Back
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Evolution
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All of the changes that have transformed life over an immense time
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Adaptation
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Inhertied characteristic that improives an organism's ability to survive and reproduce in a particular environment
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Descent with Modification
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Species on Earth today descended from earlier species
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Natural Selection
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Process by which individuals with inherited characteristics well-suited to the environment leave more offspring on average than do other individuals
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Fossils
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Preserved remains or markings left by organisms that lived in the past
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Fossil Record
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Collection of fossils recorded in rock layers over time
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Extinct Species
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Species that no longer exist
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Homologus Structures
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Similar structures among related species
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Vestigial Structures
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Homologus structures that have a major function in one species but not in a related species
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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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Variation
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Differences among members of the same species
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Artificial Selection
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Selective breeding of plants and animals to produce offspring with traits that humans value
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Gene Pool
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Consists of all alleles, or different forms of genes, in all the individuals in a population
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Microevolution
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Generation-to-generation change in the frequencies of alleles within a population
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Genetic Drift
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Change in a gene pool due to chance
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Gene Flow
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Exchange of genes with another population
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Fitness
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Contribution that an individual makes to the gene pool of the next generation
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Antibiotics
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Drugs that kill or slow the growth of bacteria
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