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U1 MOD 3 LESSON 2
BIOLOGY EVIDENCE FOR EVOLUTION VOCABULARY STUDY SET
| Term | Definition |
|---|---|
| ancestor | A human or animal that lived in the past from which others have developed. |
| DNA | An organism’s genetic material. |
| evolve | To change slowly over a long period of time. |
| external | Outside something. |
| internal | Inside something. |
| predator | An animal that exists by hunting another. |
| Structure | An arrangement or organization of parts to form an organ, system, or living thing. |
| Function | An activity or process carried out by a system in an organism, such as sensation or locomotion in an animal. |
| Analogous | Similar in function but having different evolutionary origins, as the wings of a butterfly and the wings of a bird. |
| Homologous | Having similar or corresponding features. For example, these structures are structures having similar anatomical features but they do not necessarily have the same function. |
| Function | an activity or process carried out by a system in an organism, such as sensation or locomotion in an animal. |
| Comparative Anatomy | Observing similar structures in organisms and comparing them to each other. |
| Vestigial Structures | Physical structures such as an organ, appendage, or cellular component that, through evolution, has become reduced from its ancestral condition and no longer functions. |
| Developmental Biology | Aims to understand how an organism develops—how a single cell becomes an organized grouping of cells that is then programmed at specific times to become specialized for certain tasks. |
| Molecular Biology | This field is focused especially on nucleic acids (e.g., DNA and RNA) and proteins—macromolecules that are essential to life processes—and how these molecules interact and behave within cells. |
| Evolution Theory | The theory that involves a process that results in changes in the genetic material of a population over time. This process reflects the adaptations of organisms to their changing environments and can result in altered genes, novel traits, and new species. |
| Creationism | According to these belief systems, God created all living things without the involvement of random but predictable forces like mutation, genetic drift, and natural selection. Some accept evolution for all organisms except human beings. |