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Evolution vocabulary
| Question | Answer |
|---|---|
| Evolution | hereditary changes in groups of living organisms over time The process by which different kinds of living organism ate thought to have developed. |
| Lamarck | 1744-1829 organism developed from lower to higher stages. |
| Lamarcks theories | use and dis-use:use it or lose it inheritance of acquired charterstics tics |
| Darwin | studied galapagos island wrote a book 1859 "on the origin of species by means of natural selection" |
| Darwins theories | Natural Selection |
| GRADUALISM | SLOW STEADY CHANGE OVER TIME BASED ON ENVIRONMENTAL NEED, EVOLUTION NOT PUNCUATED |
| PUNCTUATED EQUILIBRIUM | CHANGES OCCUR IN SHORT PERIODS OF TIME, THEN STAY CONSTANT FOR LONG PERIODS. |
| SEXUAL SELECTION | CHARMING CHARACTERISTICS OF THE SEXES ARE PASSED ON FROM GENERATION TO GENERATION (like bird feather patterns) |
| Allele | alternative form that a single gene may have for particular trait |
| Cladogram | Diagram with branches that respresnt the hypothesized phylogeny or evolution of species or group: use bioinformatics morphological studies and information from DNA studies |
| Natural Selection | Theory of evolution developed by Darwin based on four ideas ; excess reproduction varitation inheritance and the advantages of specific traits in an environment |
| homologous structure | anatomically similar structure inherited from a common ancestor |
| fitness | measure of a trait's relative contribution to the following generation |
| adaptive radiation | diversification of a species into a number of different species, often over a relatively short time span |
| analogous structure | structure that has the same function but different construction and was not inherited from a common ancestor |
| artificial selection | Darwin's term for the selective breeding of organisms selected for certain traits in order to produce offspring having those traits |
| vestigial structure | reduced form of a functional structure that indicates shared ancestry |
| adaptation | inherited characteristic of a species that develops over time in response to an environmental factor, enabling the species to survive. |
| Niche | role and position a species has in its environment; |
| population | A group of organisms of the same species that occupy the same geographic place at the same time |
| ERA | a large division of Earth's geologic time scale that is further divided into one or more periods. |
| fossil | preserved evidence of an organism, often found in sedimentary rock, that provides evidence of past life. |
| paleontologist | scientist who studies fossils. |
Created by:
Nabbbs
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