A researcher finds two closely related species of rodent, A and B, living sympatrically on a coastal peninsula. Geological analysis suggests that higher sea levels in the past have occasionally cut off parts of the peninsula-with the lower parts of the peninsula being under water and higher parts becoming separate islands. Do you think species A and B arose sympatrically or allopatrically? Explain your answer.

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The Answer of A researcher finds two closely related species of rodent, A and B, living sympatrically on a coastal peninsula. Geological analysis suggests that higher sea levels in the past have occasionally cut off parts of the peninsula-with the lower parts of the peninsula being under water and higher parts becoming separate islands. Do you think species A and B arose sympatrically or allopatrically? Explain your answer.

A Researcher Finds Two Closely Related Species of Rodent, a and B