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.
E. They are vestigial structures.
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Indicate whether the statement is true or false
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A) tissue B) organism C) brain D) organ system
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