In Seedcracker Finches from Cameroon, Small- and Large-Billed Birds Specialize

question 45

Multiple Choice

In seedcracker finches from Cameroon, small- and large-billed birds specialize in cracking soft and hard seeds, respectively. If long-term climatic change resulted in all seeds becoming hard, what type of selection would then operate on the finch population?

• A) disruptive selection
• B) directional selection
• C) stabilizing selection
• D) No selection would operate because the population is in Hardy-Weinberg equilibrium.

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Definitions:

Labor Demand Curve

A graphical representation showing the quantity of labor that firms are willing to hire at different wage rates.

Labor Supply Curve

A graph showing the relationship between wages and the quantity of labor workers are willing to offer, usually portraying a positive correlation.

Backward Sloping

Describes a demand curve that defies the usual law of demand, showing less quantity purchased as the price decreases.

Labor-supply Curve

A visual chart that displays the connection between the amount of work provided by employees and the rate of pay.