Which of the following observations best supports the conclusion that dolphins and sharks do not have a recent common ancestor?

A. Dolphins form social groups, but sharks are solitary.

B. Dolphins hunt during the day, but sharks are nocturnal.

C. The number of dolphin species is far less than the number of shark species.

D. The jawbone structure in dolphins is very different from the jawbone structure in sharks.

Question

Biology

Chace Mccullough

11 October, 13:24

Which of the following observations best supports the conclusion that dolphins and sharks do not have a recent common ancestor?

A. Dolphins form social groups, but sharks are solitary.

B. Dolphins hunt during the day, but sharks are nocturnal.

C. The number of dolphin species is far less than the number of shark species.

D. The jawbone structure in dolphins is very different from the jawbone structure in sharks.

+3

Answers (2)

Know the Answer?

Lilly Andersen · Answer 1

The answer is D. Their jawbone structures are too different.

Chelsea Keller · Answer 2

The asnwer is D.

this is because the traits in all the other options are acquired traits and on this basis, we cannot classify them. Instead, we look for some deeper features like the structure of their bodies. Thus, i conclude that the the answer is D