3. According to the complete replacement model, anatomically modern Homo sapiens

Question

3. According to the complete replacement model, anatomically modern Homo sapiens first appeared in Africa a. and dispersed to Europe where they interbred with local premodern H. sapiens populations and migrated to other areas displacing all premodern H. sapiens populations without interbreeding with them b. c. and remained there while premodern populations elsewhere evolved more slowly d. around 500,000 years ago e and the different African populations would have evolved completely independently from one another

Explanation / Answer

Question: 3. According to the Complete Replacement Model, anatomically modern Homo sapiens first appeared in Africa _.

Answer: b) and migrated to other areas completely displacing all premodern H. sapiens populations without interbreeding with them.

The two major hypotheses that explain modern human origins are: the complete replacement model and the regional continuity model. According to the complete replacement model, anatomically modern species arouse as a new species (Homo sapiens ) in Africa, then migrated to other regions such as Europe and Asia, eventually out-competing with all of the local populations of the premodern H. sapiens species. This model proposes that the populations of this modern H. sapiens began expanding throughout the other regions, this eventually replaced the pre-existing human species to new species of Homo with no interbreeding possible between them. Under this model, there was virtually no genetic input from these premodern H. sapiens populations.

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