Suppose That Two Groups of Humans Became Completely Isolated from One

question 35

Multiple Choice

Suppose that two groups of humans became completely isolated from one another for a very long period of time due to a geographic barrier and that each group had very different environmental conditions with which to contend.What might be true?

• A)Gene flow would occur between the two populations.
• B)Speciation could occur,since the human species already exists.
• C)The scenario described is an example of sympatric speciation.
• D)The two populations would be subject to identical selective pressures.
• E)If speciation occurred,reproductive isolation would necessarily end if the two species later inhabited the same area.

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Definitions:

Profit-Maximizing Output

The level of production at which a business achieves the highest possible profit, balancing costs against revenues.

Cost Function

A mathematical relation that describes how production costs vary with changes in the quantity of output produced.

Profit-Maximizing Output

The quantity of production that generates the highest possible profit for a firm, determined by the intersection of marginal cost and marginal revenue.

Price Equals Marginal Cost

This principle suggests that in a competitive market, firms set prices equal to their marginal cost of production, achieving economic efficiency.