The out-of-Africa hypothesis states that (a) all new species...

Name: Problem 2, Chapter 17: Biology Now
Uploaded: 2021-09-09T22:03:22-08:00
Duration: 1 min 28 s
Channel: Joanna Quigley
Description: The out-of-Africa hypothesis states that (a) all new species of hominins arose in Africa and then migrated to the rest of the world. (b) many new species of hominins arose outside of Africa and then migrated back to Africa later. (c) all hominin speciation events occurred outside of Africa. (d) all speciation events occurred in Africa, but only Homo sapiens distributed itself across the globe.

The out-of-Africa hypothesis states that (a) all new species of hominins arose in Africa and then migrated to the rest of the world. (b) many new species of hominins arose outside of Africa and then migrated back to Africa later. (c) all hominin speciation events occurred outside of Africa. (d) all speciation events occurred in Africa, but only Homo sapiens distributed itself across the globe.

The out-of-Africa hypothesis states that
(a) all new species of hominins arose in Africa and then migrated to the rest of the world.
(b) many new species of hominins arose outside of Africa and then migrated back to Africa later.
(c) all hominin speciation events occurred outside of Africa.
(d) all speciation events occurred in Africa, but only Homo sapiens distributed itself across the globe.

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Key Concepts

Out-of-Africa Hypothesis

This hypothesis is a model in human evolution that posits that the origin of anatomically modern humans occurred in Africa, and that only Homo sapiens migrated from Africa to populate the rest of the world. It emphasizes that all major speciation events leading to modern humans took place on the African continent.

Hominin Speciation

Hominin speciation refers to the evolutionary process in which different species or subspecies within the hominin lineage emerged over time. In the context of the out-of-Africa hypothesis, it underscores that the divergence of species in this lineage primarily happened in Africa.

Modern Human Migration

Modern human migration describes the dispersal of Homo sapiens from Africa to other parts of the world. This movement is a fundamental aspect of human evolution studies, highlighting how early modern humans spread out of their original habitat and replaced or interbred with resident archaic human populations in different regions.

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