Geographic Isolation of SpeciesLook at the four squares [] that indicate where the following sentence could be added to the passage.说明前面应该会讲述一个完整的物种形成和殖民地化的过程。
In the formation of many species, the initial isolation of a population seems to have been a geographic barrier. This mode of evolving new species is called allopatric speciation.Many factors can isolate a population geographically. A mountain range may emerge and gradually split a population of ...
thereby preventing population interbreeding.With its gene pool isolated, a separate population can follow its own evolutionary course.In the formation of many species, the initial isolation of a population seems to have been a geographic barrier.This mode of evolving new species is called allopatric...
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B. Genetic changes in a geographical isolated population do not necessarily make the population look different enough from its parent population to be considered a new species C. Geographical isolation allows the separated populations to evolve independently of each other and so can lead to the forma...
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#托福阅读长难句# Geographic isolation creates opportunities for new species to develop, but it does not necessarily lead to new species because speciation occurs only when the gene pool undergoes ...
In the formation of many species, the initial isolation of a population seems to have been a geographic barrier. This mode of evolving new species is called allopatric speciation.Many factors can isolate a population geographically. A mountain range may emerge and gradually split a population of ...