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15 Cards in this Set
- Front
- Back
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age of earth
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4.3 billion years
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evolution
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change in a species over time
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decent with modification
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requires a change in one's DNA
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adaptations
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inherited characteristics that improve an organisms ability to survive and reproduce in an environment
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natural selection
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the process by which nature chooses the organism with the most helpful mutation to survive and reproduce the most (survival of the fitest)
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Fossils
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skeletons that have been compacted due to pressure and provide insight on prior life forms
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Homologous Structures
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same structure different function (bat wing+ human arm)
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Vestigal Structures
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ancestral reminants with no purpose (appendix)
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Comparative Embryology
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shows similarities in embryotic development
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Population
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a group of organisms of one species, living in a certain area.
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Variation
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a random mutation in an organism's genes
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Artificial Selection
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humans choose to breed a certain spieces
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fitness
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to be the best suited for your environment
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gene flow
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when outside individuals wiht different genes enter a population and pass on their genes.
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antibiotic resistence
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when someone does not finish a perscription the leftover bactreria become super bugs and require different antibodies to cure them.
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