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Chapter 4 Vocabulary

TermDefinition
Species a group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce.
Variation any difference between individuals of the same species.
Evolution the process by which modern organisms have descended from ancient organisms.
Fossil preserved remains or traces of an organism that lived in the past.
Adaptation an inherited behavior or physical characteristic that helps an organism survive and reproduce in it's environment.
Scientific Theory a well-tested explanation for a wide range of observations and experimental results.
Mechanism the natural process by which something takes place.
Artificial Selection Only individuals with a desired trait.
Competition the struggle among living things to get the necessary amount of food, water, and shelter.
Mutation Any change to a genetic material.
Fitness describes how well something can survive and reproduce in it's environment.
Sexual Selection natural selection that acts on an organism's ability to get the best possible mate.
Coevolution the process by which two species evolve in response to changes in each other over time.
Fossil Record Data for fossils that scientists can analyze and interpret.
Embryo a young organism that develops from a fertilized egg (zygote).
Homologous structures similar structures that related species have inherited from a common ancestor
Extinct a species no longer exists and will never again live on Earth.
Protein a large organic molecule made of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur.
Created by: hn07158
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