What Has Occurred When Natural Selection Results in a Shift

question 14

Multiple Choice

What has occurred when natural selection results in a shift toward one end of a normal range of traits? 

• A) directional natural selection 
• B) diversifying natural selection 
• C) stabilizing natural selection 
• D) discontinuous natural selection

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Definitions:

Marketplace

A marketplace is a physical or virtual space where buyers and sellers come together to exchange goods, services, or information.

Socially Optimal Quantity

The level of output where the marginal benefit to society of consuming another unit equals the marginal cost of producing it, leading to the most efficient allocation of resources.

Positive Externality

A benefit that is enjoyed by a third-party as a result of an economic transaction or activity.

Subsidy

A financial aid provided by the government or a public body to reduce the cost or price of goods and services, encouraging production or consumption.