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Will geographical isolation be a major factor in the speciation of an organism that reproduces asexually? Why or why not?


No, Asexually reproducing organisms have very little variation over generations as they involve only one parent. The variations result from the DNA mutations . But these variations are very few and are not capable of giving rise to a new species. Thus geographical isolation will not be a major factor in the speciation of the orgnaism that reproduces asexually.
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Why are human beings who look so different from each other in terms of size, colour and looks said to belong to the same species?

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