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Evolution Terms
Vocabulary Associated with Evolution Unit
| Term | Definition |
|---|---|
| Evolution | Change of populations over time, especially from simple to more complex |
| Related to | Being connected to a family, group, or individual |
| Descended from | To come down from another generation, to be a direct blood relative |
| Fossil | The preserved remains or impression of a prehistoric organism |
| Natural Selection | The process where organisms better adapted to their environment survive and reproduce passing on those adaptations to the next generation |
| Artificial Selection | The process where humans choose what traits get passed down to the next generation |
| Cladogram | A branching diagram showing the relationship of a number of different species |
| Speciation | The formation of a new species through the course of evolution |
| Gene Pool | The total of alleles or genes in a population |
| Homologous Structures | When different organisms have bones or organs that have very similar form and function |
| Analogous Structures | Different animals have structures with the same function but no underlying common form |
| Vestigial Structure | A structure present in an organism that no longer has a purpose or function |
| Competition | Fighting over resources such as food, shelter, or mates. |
| Embryo | unborn developing organism |
| geographic isloation | When a population is separated by some form of geography from the rest of their species. |
| genetic drift | a variation of the allele frequency in a small population |
| Adaptive Radiation | The diversification of a group of organisms into different forms filling different ecological niches |