Geological isolation definition?
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Geographical isolation means separation of species by physical barriers like water forms, oceans, mountains etc. Geographical isolation just requires single parent. The offspring is just an exact copy of the parent. As there are less chances for variations to oocur, new species are not formed in asexually reproducing individuals undergoing geographic isolation.
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The geographical isolation leads to reproductive isolation due to which there is no flow of genes between separated groups of population. It is caused by various types of barriers such as mountain ranges, rivers and sea
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