In Contrast to the Out-Of-Africa Hypothesis,the Multi-Regional Continuity Hypothesis Contends

question 38

Multiple Choice

In contrast to the out-of-Africa hypothesis,the multi-regional continuity hypothesis contends that Homo ergaster migrated to many continents as much as one million years ago,and all populations evolved into modern humans because

• A) no further evolutionary changes occurred.
• B) there was sufficient gene flow between populations to maintain one species.
• C) constant warfare allowed one or another lineage to dominate.
• D) hybrids between different lineages were superior and replaced their ancestors.
• E) all lineages changed but in response to the same evolutionary pressures so they changed in the same way.

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Definitions:

Reward To Risk Ratio

A measure that evaluates the anticipated gains from an investment against the level of risk assumed to achieve these gains.

Security Market Line

A graphical representation of the expected return of all risky marketable securities as a function of their beta, or systemic risk, according to the capital asset pricing model.

Diversifiable Risk

Relates to the risk that can be reduced or eliminated from a portfolio by holding a variety of investments.

Non-Diversifiable Risk

A type of investment risk that cannot be eliminated through diversification, arising from factors that affect all companies.