Question

fossilised remains of prehistoric woolly mammoths share many similarities with modern - day elephants. these similarities provided the first evidence that woolly mammoths were related to modern - day elephants. which of the following is the best additional evidence that they were related?
woolly mammoths ate a diet similar to that of modern - day elephants.
woolly mammoth tissue contained dna sequences similar to those of modern - day elephants.
woolly mammoths walked on four legs, like modern - day elephants.
woolly mammoth fossils were found in the same areas where modern - day elephants live.

Explanation:

DNA contains genetic information that determines an organism's traits. If woolly mammoths had DNA sequences similar to modern - day elephants, it provides strong evidence of a close evolutionary relationship. A similar diet (A) could be due to environmental factors rather than a direct evolutionary link. Walking on four legs (C) is a common trait among many large mammals and not specific enough. Fossils being found in the same area (D) could be a coincidence and not a direct indicator of a relationship.

Answer:

B. Woolly mammoth tissue contained DNA sequences similar to those of modern - day elephants.