When Conditions Are Right, Many New Species May Develop in a Relatively

question 19

Multiple Choice

When conditions are right, many new species may develop in a relatively short period of time from a single ancestor. Such short bursts of evolutionary activity are called

• A) gene flow.
• B) adaptive radiation.
• C) the founder effect.
• D) population explosion.
• E) genetic drift.

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Definitions:

Equilibrium Quantity

The quantity supplied and the quantity demanded at the equilibrium price.

Loanable Funds

The money available for borrowing in the financial market, determined by the level of savings and the supply of credit.

National Saving

The total of private savings and government savings, essentially the portion of national income that is not consumed or spent by government.

Open-Economy Macroeconomic Model

A framework used to evaluate the interactions between a country’s macroeconomy and the global economy, taking into account trade, foreign investment, and exchange rates.