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17 Cards in this Set
- Front
- Back
Evolution
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CHANGES in an organism over time
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Adaptation
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When an organism changes to survive in its environment
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Charles Darwin
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Noticed that the finches(birds) on different islands had different beaks. This means they ADAPTED to their environments.
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Competition
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When organisms are going after the same resource. (food, land)
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Diversity
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different kinds of organisms
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DNA
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differences in DNA provide the key to diversity in all organisms.
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Fossil
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the remains of organisms. THESE ARE THE BEST EVIDENCE OF EVOLUTION.
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What is the best evidence of evolution?
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Fossils.
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Galapagos Islands
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Islands where Charles Darwin observed the adaptations of finches.
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Habitat
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A place where an organism lives.
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Homologous Structures
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Structures that do the same job in different species. (A 5 fingered limb on a human and in a Dolphin's fin)
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Natural Selection
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Individuals that can adapt (change) to fit their environment will survive and reproduce.
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Species
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A group of similar organisms that can reproduce with each other.
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Variation
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Differences within the same species (male and female humans)
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What brings on evolution?
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1. Movement of individuals in and out of a population.
2. Changes in climate. |
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How fast does evolution occur?
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Very slowly
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Evidence to support evolution:
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1. fossil evidence
2. similar anatomy 3. DNA |