In This Chapter's "Focus on Globalization" Section,scientists Trace the Global

question 39

Multiple Choice

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

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Definitions:

Skilled People

Individuals who have acquired special abilities, knowledge, or expertise through training or experience, enhancing their job performance.

Scripts

Abstract, generalized accounts of familiar repeated events.

Episodic Memory

A form of memory that involves the recollection of specific events, situations, and experiences, including the context and emotions associated with them.

Coherent Nature

The quality of being logical, consistent, and forming a unified whole, often used in various contexts like arguments or systems.