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Biology exam 2 pt2
csm/ about evolution
| Question | Answer |
|---|---|
| creationism | life is created by God/ gods/ divine energy; life forms remained unchanged or unrelated overtime |
| catastrophism | explains the history of life on earth being shaped by a series of sudden, violent events, leading to mass extinctions and the emergences of new species |
| spontaneous generation | a living being coming from nonliving materials |
| Francesco Redi | famous for his experiments disproving spontaneous generation |
| lazzaro spallanzi | catholic priest, biologist & physiologist provided critical evidence against the theory of spontaneous generation, demonstrating that microorganisms originate from the air rather than arising spontaneously from non-living matter. |
| louis pasteur | developed food processing known as pasteurization; heat up things to kill as many bacteria as possible |
| Jean Baptiste Lamarck | started the thought of inheritance of acquired traits (Lamarckism, soft inheritance: animals evolve because the want to& choose what traits to acquire/ pass on/ use or disuse) |
| use/disuse | proposed by Jean Baptiste Lamarck suggests that organisms develop traits base on their use or disuse of body parts |
| Charles Darwin (1809-1882) | contributed to the concept of natural selection- comes from a wealthy family of doctors, studied priesthood after failing to be a doc. b/c he is scared of blood, enjoyed natural history & field collection Naturalist on H.M.S. Beagle- |
| Inheritance of acquired traits | aka Lamarckism: animals evolve because the want to& choose what traits to acquire/ pass on/ use or disuse |
| Alfred Wallace | from a middle-class family: a surveyor, teacher, civil engineer| took entomology as a hobby| began naturalist exploration in 1848 |
| H.M.S. Beagle | a 5-year voyage around South America & played a significant role in Charles Darwin's expedition/ development of the theory of natural selection |
| Galapagos Islands | the place that Charles Darwin traveled to that became the foundation of the theory of natural selection because these islands were separated enough to dictate mutations in animals, but far away enough to |
| uniformitarianism | geological principle that that the natural processes and loves that shape earth today and have been operation in the same way throughout geological history [essentially- the earth must be extremely old for these processes to occur |
| Charles Lylle | wrote 'principles of geology' 1830-1837: largely responsible for the general acceptance of the view that all features of the Earth’s surface are produced by physical, chemical, and biological processes through long periods of geological time. |
| origin of species | the book published that introduces the theory of evolution through natural selection |
| Adaptation | heritable traits that improve fitness |
| fitness | the biology science terms for describing survivorship and reproduction |
| divergent evolution | adaptive radiation: closely relate species evolve different traits over time to different environmental pressures |
| convergent evolution | process in which unrelated species/ distantly related independently develop a similar way to similar environmental pressure |
| explain Darwin's and Wallace's concept of natural selection | it determines how well a species can survive and how well it can create a new generation| determined by genetic variation, competition for limited resources, and heritable traits |
| how is natural selection both rand and non-random | the initial mutation is random, but the more the mutation appears the more it becomes an inheritable trait-- essentially persistent mutations and the variants favored survive |
| what is genetic variation? why is genetic variation in a population important to natural selection? | difference in DNA within a population/ of the same species through alleles (different versions of a gene. the range of alleles & how many there are [frequencies] determine how well a species adapts according to how the evolved |