The Bell-Shaped Curve at the Top of the Figure Below

question 66

Multiple Choice

The bell-shaped curve at the top of the figure below shows the distribution of a phenotype in a population at the start of an experiment. The three graphs (lettered A-C) beneath predict what the distribution will look like if a certain type of selection occurs. Which graph represents what the phenotypic distribution will look like if the population undergoes stabilizing selection?

• A)Graph A
• B)Graph B
• C)Graph C
• D)These graphs all show natural selection, but none show stabilizing selection.

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Average Tax Rate

The proportion of total income that an individual or corporation pays in taxes.

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The amount of money received by an individual or business in exchange for labor, services, or investments, typically measured over a specific period of time.

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Compulsory financial charges imposed by a government on individuals, corporations, or other entities, primarily used to fund public expenditures.

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Ranges of income taxed at different rates, designed to ensure that taxpayers with higher incomes pay a higher percentage of their income in taxes.