BIOLOGY: evolution
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Created by:
jasper_sparkles_2 on December 7, 2009
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35 terms
Terms | Definitions |
|---|---|
 evolution | change over time |
| darwin and wallace | the 2 men responsible for evolution |
| decent with modification | what darwin and wallace called evolution |
| lyell | this man wrote a book on geology from which darwin got his idea of a time frame |
| thomas malthus | this man wrote a book on growth patterns in finance from which darwin got his idea that organisms increase their numbers |
| populations have great reproductive potential | point one of darwin's theory |
| population size remains stable | point 2 of darwin's theory |
| rescorces are limited | point 3 of darwin's theory |
| individuals compete | part 4 of darwin's theory |
| individuals vary | part 5 of darwin's theory |
| most variation is heritable | point 6 of darwin's theory |
| survival of the fittest | point 7 of darwin's theory |
| evolution occurs as advantage | point 8 of darwin's theory |
| adaptive | favorable traits are ____________ |
| maladaptive | non favorable traits are ___________ |
| collar cell | the first animal was a ________ _________ (choanocyte) |
| paleontology | evidence for evolution, the study of the fossils of dinosaurs |
| biogeography | evidence for evolution, where organisms live on the planet |
| embryology | evidence for evolution, the study of how you develope |
| comparative anatomy | evidence for evolution, comparing the structure of bones |
| homologous | same underlying bone structure, different function |
| analogous | different underlining bone structure, same function |
| natural selection pressures | a natural process that consists of 3 types; stabilizing, directional, and disruptive |
| stabilizing selection | the most common selective pressure, it stabilizes against both sides of the bell curve |
| directional selection | a type of selective pressure where one side of the bell curve is selected- pushes the population towards something new |
| disruptive selection | a type of selective pressure that is a disaster or catastrophic event that ruins the average |
| unnatural selection pressures | a process that consists of two types; sexual selection and artificial selection |
| sexual selection | a type of unnatural selection pressure, dimorphism (2 body types), females choose, causes male changes over time |
| artificial selection | a type of unnatural selection pressure, such as breeding dogs and certain plants |
| ecology | the study of interactions between living organisms (plants, oranges, coral, bugs) and the environment (air, rocks, dirt, sun) |
| habitat | the space the organism is found in. competition arises between organisms for habitat |
| population | organisms that share the same hapitat are referred to as __________, a big group of the same species, community, or ecosystem |
| niche | what an organism is doing (its job). no 2 organisms can chare the same one at the same time |
| galapagos islands | where darwin collected data |
| hi! | ignore this term |
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