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15 Cards in this Set
- Front
- Back
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This was Charles Darwin's idea for how the species originated... and is the mechanism of change in a population
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Natural selection
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inidviduals with cetain variations are likely to ________ , _____, and _____ .
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1. survive
2. reproduce 3. pass these variations on to future generations. |
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Much of the evidence for evolution has come from ___, ___, and ____.
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fossils, anatomy, and biochemistry.
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What must there be a change in, in order for evolution to take place?
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genetic equilibrium (changes)
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Natural selection is usually a factor that causes change in ________ gene pools... such as humans.
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established (have been around for a long time.)
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The seperatiion of populations by __________ barriers can lead to speciation.
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physical (barriers)
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What supports the idea that natural selection is an important mechanism of evolution?
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patterns of evolution
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The hypothesis that species originate through gradual changes in adaptations.
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gradualism
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belief that speciation occurs in rapid bursts
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punctuated equilibrium
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This type of evidence supports both gradualism and punctuated equilibrium.
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fossil records
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adaptations that enable an individual to blend in with their surroundings
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camophlage
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process of evolution of a new species
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speciation
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structural (or functiona)features that are similar between species... like the forelimbs of a whale, crocodile, and bird wing...
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homologous structures.. all help the organism with movement.
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structural similarities between speceies that are NOT closly related
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divergent evolution
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Populations evolve, but _____ don't
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individuals don't evolve
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