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BHS BIOLOGY (madi o)
Three vocabulary words that are needed on evolution test
| Question | Answer |
|---|---|
| Niche | A job that a organisms gains as a job in their environment. |
| gene pool | Total genetic information of all individuals in populations. |
| mutation | change in gene or chromosome that is unlike they parents type. |
| Genetic Equilibrium | same values from generation to generation. |
| Variation | Marked difference from recognized form, function, or structure. |
| Natural Selection | organisms best adapted to their environment tend to survive and transmit their genetic characteristics |
| Directional Selection | in a environment or more more environmental changes all mutations |
| Stabilizing Selection | effects of mutation gene flow and genetic drift preserve common phenotypes |
| Disruptive selection | Formed at both ends of the range of variations |
| Genetic drift | Interbreeding populations happens |
| Population bottlenecking | Genetic drift that occurs as a result of a drastic reduction that is not due to natural disasters |
| Founder effect | natural disaster happens, gene flow, and other frequencies |
| Speciation | The evolutionary formation of new biological species |
| Biological species concept | a catagory in which species are able for interbreeding |
| allopatric speciation | Occurring in separate, nonoverlapping geographic areas. Often used of populations of related organisms unable to crossbreed because of geographic separation. |
| sympatric speciation | Speciation that occurs without geographic isolation of a population |
| ecological isolation | Geographical barriers, ecological isolation, behavioral isolation, and polyploidy do not directly affect organisms at all |
| Temporal isolation | does not depend on the temporal behavior of other unrelated processes running on the same system, thus sharing with it a set of resources |
| Behavioral Isolation | An isolating mechanism in which two allopatric species do not mate because of differences in courtship behavior. Also known as ethological isolation. |
| gametic mortality | a form of reproductive isolation in which sperm are immobilized and destroyed before fertilization can take place. |
| Extinction | occurs when a certain species is completly taken out by either predators or human activities making it impossible to bring them back |
| Adaptive radiation | Diversification of a species or single ancestral type into several forms that are each adaptively specialized to a specific environmental niche. |
| Gradual speciation | species is gradually increasing |
| Punctuated speciation | Changes in diverse during the period of time making many features to the organism/species change |
| microevolution | Evolution resulting from a succession of relatively small genetic variations that often cause the formation of new subspecies. |
| Macroevolution | Large-scale evolution occurring over geologic time that results in the formation of new taxonomic groups. |
| Population | the species that live with/around you |
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madi_ovist
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