terms 16.3 Word Scramble
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Term | Definition |
allopatric speciation | A speciation in which biological populations are physically isolated by an extrinsic barrier and evolve intrinsic (genetic) reproductive isolation, such that if the barrier breaks down, individuals of the population can no longer interbreed. |
biological species concept | the concept that a species is a population of organisms that can interbreed but cannot breed with other populations |
geographic isolation | the physical separation of populations due to geographic barriers that prevent interbreeding |
gradualism | a model of evolution in which gradual change over a long period of time leads to biological diversity |
morphology | the study of the structure and form of an organism |
prezygotic isolation | isolation that occurs before fertilization |
post zygotic isolation | isolation that occurs after fertilization |
reproductive isolation | the inability of members of a population to successfully interbreed with members of another population of the same or related species |
sympatric speciation | occurs when two populations become reproductively isolated within the same geographic area |
speciation | the formation of new species as the result of evolution |
punctuated equilibrium | a model of evolution in which short periods of drastic change in species are separated by long periods of little to no change |
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