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evolution notes pt.1
evolution notes
| Term | Definition |
|---|---|
| Divergent evolution | 2 or more related species becoming more and more dissimilair |
| convergent evolution | unrelated species develop similar adaptations bc of similar environments (shark, dolphin) |
| geographic isolation | a physical barrier that divides a population into 2 or more groups (rivers, mountains, etc) |
| behavioral isolation | 2 species that don't mate bc of differences in their behavior |
| coevolution | 2 species that evolve together or have an advantage on each side |
| reproductive isolation | when members of different populations can no longer mate successfully with each other |
| temporal isolation | prevents species from mating bc of their mating time. (winter, summer, fall, spring) |
| punctuated equalibrum | populations that remain stable for long periods of time then get interupted by periods of brief rapid change |
| adaptation | ability of an organism to survive and reproduce in its environment (camouflage) |
| adaptive radiation | the evolution of many species from one common ancestor |
| gradualism | the idea that evolution occured in small steps over millions of years |
| who is the father of evolution | charles darwin |
| who published the book "on the origin of species" | charles darwin |
| what is the "survival of the fittest" | one of darwin theory of natural selection |
| what is Darwin's evolution theory | all living things descend from a common ancestor and species change over time |
| natural selection | organisms with favorable traits survive to pass on there genes faster than organisms with unfavorable traits |
| what are the 4 main principles of natural selection | 1.)variation 2.)overproduction 3.)adaptation 4.)descent with modification |
| fossil record | shows groups of plants and animals placement on how old they are by how deeply buried or not |
| geographic distribution | different animals on different continents that had similar behaviors |
| developmental similarities | developing organisms of different species that looked similar |
| homologous structures | features that are similar in structure but appear in different organisms and have different functions |
| analogous structures | structures that perform a similar function but are not similar in origin |
| vestigial structures | features that are reduced or useless but functional in far distant ancestors |
| molecular and genetic evidence | closely related organisms tat have similar dna and amino acid sequences |
Created by:
jenny.lopez
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