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BMMS Life Sci Chpt 7
Evolution
| Term | Definition |
|---|---|
| species | A group of organisms that are physically similar and can mate with each other and produce offspring that can also mate and reproduce. |
| fossil | The preserved remains or traces of an organism that lived in the past. |
| adaptation | A behavior or physical characteristic that allows an organism to survive or reproduce in its environment. |
| evolution | The gradual change of a species over time. |
| scientific theory | A well tested concept that explains a wide range of observations. |
| natural selection | The process by which individuals that are better adapted to their environment and more likely to survive and reproduce than others of the same species. |
| variation | A difference between individuals of the same species. |
| comparative anatomy | The comparison of the structures of different organisms. |
| homologous structures | Body parts that are structurally similar in related species. |
| habitat | A specific environment that provides the things that an organism needs to live, grow, and reproduce. |
| extinct | The disappearance of all members of a species from Earth. |
| branching tree diagram | A diagram that shows how scientists think different groups of organisms are related. |
| shared derived characteristics | A characteristic, usually a homologous structure, shared by all organisms in a group. |