Two species of antelope ground squirrels are separated by the grand canyon. they are hypothesized to descend from a common ancestor, populations of which were separated as the canyon formed. if this hypothesis is correct, it would be an example of: sympatric speciation by vicariance. sympatric speciation by dispersal. peripatric speciation by vicariance. allopatric speciation by vicariance. allopatric speciation by dispersal.

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For the answer to the question above, I think the answer is "allopatric speciation by vicariance" . it is an event that can occur either by dispersal when a few members of a certain species move to a new land or geographical area. I hope this helps


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