During the 1990s Knowlton and colleagues studied pairs of sister species of the genus Alpheus (snapping shrimp). In each of these sister species pairs, members of one pair lived on the Caribbean side of the Isthmus of Panama, while members of the other pair lived on the Pacific side. What type of speciation might be responsible for this speciation? Group of answer choices

allopatric speciation with the vicariance model

Explanation:

Allopatric breaks down into "allos" which means other or different and "patric" which means land or something similar.

Here the speciation is allopatric speciation because the sister species are in two different environments or lands. It represents the vicariance model because there is a physically divide between the organisms such as one is in the Isthmus of Panama, while members of the other pair live on the Pacific side.

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