Official 10 Lec 1
Question 6 of 6
What does DNA evidence indicate about relationships among whales?

A.

All modern whales descend from sperm whales

B.

Differences among toothed whales are less significant that was previously thought

C.

Not all toothed whales are closely related

D.

Sperm whale are more closely related to killer whales than was previously thought

正确答案:C

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