Different Species of Fruit Flies Occupy Each of the Islands

question 100

Multiple Choice

Different species of fruit flies occupy each of the islands in the Hawaiian island chain, a group of volcanic islands that formed one after the other. One hypothesis for how the different fruit fly species formed is that, after each new island was formed, fruit flies from existing islands colonized it and subsequently diverged. If this hypothesis is correct, it would be an example of:

• A)allopatric speciation by dispersal.
• B)allopatric speciation by vicariance.
• C)peripatric speciation by vicariance.
• D)sympatric speciation by dispersal.
• E)sympatric speciation by vicariance.

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Definitions:

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