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Evolution, Biegel

Evolution & Natural Selection

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