Multiple Choice
Why did the authors choose to look specifically for vertebrate mitochondrial genes in their core samples?
A) Animal cells do not have chloroplasts.
B) They wanted to distinguish animal mitochondria from plant mitochondria.
C) Animals would have been present in Beringia before plants.
D) Animal cells do not have a nucleus.
E) Only vertebrates eat plants.
Correct Answer:

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Correct Answer:
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