Evolution & Natural Selection
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Competition | A struggle between organisms for resources such as food, living space, and mates.
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| Adaptation | Any variation that makes an organism better suited to its environment
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| Evolution | A change in the genetic makeup of a species over time.
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| Darwin | The naturalist who proposed the theory of evolution by natural selection
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| Variation | An inherited trait that makes an individual different from other members of its species
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| Population | All of the individuals of the same species living in the same area
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| Natural selection | The mechanism of evolution where organisms with the traits best-suited to the environment survive and reproduce
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| Mutation | A permanent change in an organism's genes; can be harmful, silent or helpful
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| Lamarck | The scientist who proposed the Hypothesis of Acquired Characteristics
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| Fossil record | Evidence of evolutionary change found in sedimentary rock
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| Homologous structures | Body parts of similar origin and structure found in different organisms. Ex. forelimb of frog and a bat wing
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| Vestigial structures | Body parts without an apparent function. Ex. appendix, pelvic bones in whales
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| Fossil | The remains of prehistoric organisms found in sedimentary rock
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| Geographic isolation | When organisms are separated by large geographic features such as canyons, mountains, rivers and oceans, and develop into new species.
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| Embryology | The study of embryos and their development
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| DNA and protein evidence | measurable support for evolution, based on similarities in DNA and Amino acid sequence.
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Created by:
nbiegel
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