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Speciation
| Question | Answer |
|---|---|
| Lineage | Generation from generation |
| Define species | Groups of populations whose individuals have the potential to inter breeed and produce fertile offspring |
| Forces that caused speciation | Mutation, Migration, Genetic Drift, and Natural Selection |
| What force is the most common method of speciation? | Geographic speciation |
| What do most people argue about? | Methods that cause speciation |
| Evolution is not a result, but a ___. | Goal |
| Geographical speciation model phases | ---- |
| Phase 1 | Species split into 2 groups by geographical barrier |
| What does not occur between the groups? | Migration |
| What occurs during the geographical barrier between the 2 species? | Mutations and different effects of genetic drift |
| What can you do to see if the 2 species can't interbreed? | Remove geographical barrier |
| If they can't interbreed... | They are different species |
| What is the result of the two snails (model)? | Divergence; can't interbreed |
| Possible barriers | Mountains, deserts, oceans, rivers, glaciers |
| If divergence is small... | They can still interbreed and are the same species |
| What is a gradual process? | Diverage |
| How quickly do new species form? | Not instantaneous |
| Draw an example | Darwin Finches on the Galapagos Islands |
| Speciation | The process of getting two species from one |
Created by:
animalsavior
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