You Are Studying Leaf Size in a Natural Population of Plants.The

question 58

Multiple Choice

You are studying leaf size in a natural population of plants.The second season is particularly dry,and the following year the average leaf size in the population is smaller than the year before.But the amount of overall variation is the same,and the population size hasn't changed.Also,you've done experiments that show that small leaves are better adapted to dry conditions than are large leaves.Which of the following has occurred?

• A)stabilizing selection
• B)directional selection
• C)genetic drift
• D)disruptive selection

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Definitions:

Society

A group of individuals involved in persistent social interaction, or a large social group sharing the same geographical or social territory, typically subject to the same political authority and dominant cultural expectations.

Production Possibilities Curve

A graphical representation showing the maximum quantity of two goods or services that can be produced within a given time period and with available resources.

Efficiently

The ability to achieve a desired result or produce a desired output with the least amount of waste, effort, or inefficiency.

Capacity

The maximum level of output that a company can sustain to make a product or provide a service.