Imagine a Very Deep Lake with Multiple Species of Fish

question 109

Multiple Choice

Imagine a very deep lake with multiple species of fish. The lake has many different regions (i.e., shallow water with high light penetrance, deep water with low light penetrance) . A phylogeny of the fish shows that they have all descended from a common ancestor. Which of the following is the MOST likely cause of speciation in fishes in this lake?

• A)allopatric speciation
• B)peripatric speciation
• C)sympatric speciation

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