In a Very Large Population, a Quantitative Trait Has the Following

question 10

Multiple Choice

In a very large population, a quantitative trait has the following distribution pattern. If there is no gene flow, the curve shifts to the left or to the right, and the population size consequently increases over successive generations, which of the following is most likely occurring?

• A) immigration or emigration
• B) directional selection
• C) disruptive selection
• D) genetic drift

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Definitions:

Variable Costs

Costs that fluctuate in direct proportion to changes in levels of production or sales activity within a business.

Total Contribution Margin

The amount left over from sales revenue after variable expenses have been deducted; it contributes to covering fixed costs and generating profit.

Fixed Costs

Charges that stay the same no matter the scale of production or sales, like rent, salaries, and insurance.

Variable Costs

Expenses that vary depending on the amount of products or services a company generates.