Study of the mitochondrial DNA of present day Native Americans points to _________.
A) The impossibility of their being related to East Asians who crossed the Beringia land bridge around 25,000 years ago
B) The incompleteness of the human genome, at least at present
C) A gap of roughly 10,000 years between the emergence of their genome in Siberia, and its transfer to the Americas
D) The imprint of a bacterial infection that was acquired when one individual sailed across the Pacific to the vicinity of modern-day Seattle
Correct Answer:
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