The antifreeze proteins found in fish that live in very cold waters of the Arctic and Antarctic have evolved independently.The common ancestor of these fishes did not have the antifreeze proteins.Based on this information, which statement is true?
A) The antifreeze proteins in Arctic and Antarctic fish are homologous.
B) The antifreeze proteins in Arctic and Antarctic fish are homoplasies.
C) The Arctic and Antarctic fish form a clade.
D) The antifreeze proteins evolved by evolutionary reversals.
E) Convergent evolution does not occur for antifreeze proteins.

Question

Quizplus · Accepted Answer

Since the common ancestor did not have the antifreeze protein, the evolution of this characteristic in the Arctic and Antarctic fish would be a result of convergent evolution and not homology. Therefore, the correct option is B.

The Antifreeze Proteins Found in Fish That Live in Very