You Are at the Aquarium Looking at a Freshwater Mammal

question 17

Multiple Choice

You are at the aquarium looking at a freshwater mammal tank and an adult manatee swims close to the glass.On his front flippers you see fingernails.What is a likely explanation for the presence of fingernails on a manatee?

• A)They are analogous to human fingernails.
• B)They are homologous to fish fins.
• C)They are a developmental homology.
• D)They are analogous to bear claws.
• E)They are vestigial structures.

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