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Definition
| Descent with modification; the idea that living species are descendants of ancestral species that were different from the present-day ones; also defined more narrowly as the change in the genetic composition of a population from generation to generation. |
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Definition
| The scientific study of life. |
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Definition
| New properties that arise with each step upward in the hierarchy of life, owing to the arrangement and interactions of parts as complexity increases. |
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Definition
| An approach to studying biology that aims to model the dynamic behavior of whole biological systems based on a study of the interactions among the system's parts. |
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