In this chapter's "Focus on Globalization" section, scientists trace the global spread of anatomically modern humans by constructing a global phylogenetic tree based on mtDNA (mitochondrial DNA). What have we learned from this tree?

A. The Americas were settled by multiple haplogroups rather than by a single ancestral population.
B. Modern humans spread out of Africa over a million years ago.
C. There was only one wave of migration into North and South America.
D. The Ice Age temporarily halted early human migrations.
E. Human migrations were not influenced by global climate change.


Answer: A

Anthropology & Archaeology

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Anthropology & Archaeology