Based on current fossil evidence,
A) whales were likely fully aquatic before they evolved peg-like teeth or baleen.
B) evolution of baleen forced whales to become fully aquatic.
C) the teeth of extinct whales such as Dorudon were similar to those of extinct land mammals.
D) whales were likely fully aquatic before they evolved peg-like teeth or baleen and the teeth of extinct whales such as Dorudon were similar to those of extinct land mammals.
E) evolution of baleen forced whales to become fully aquatic and the teeth of extinct whales such as Dorudon were similar to those of extinct land mammals.

Question

Quizplus · Accepted Answer

Whales were already fully aquatic before the evolution of specialized feeding mechanisms like peg-like teeth or baleen. The teeth of ancient whales, such as Dorudon, show similarities to those of extinct land mammals, indicating a terrestrial origin and a gradual adaptation to aquatic life.

Based on Current Fossil Evidence