Why Have the Two Plant Populations Depicted in the Following

question 24

Multiple Choice

Why have the two plant populations depicted in the following diagram become so different in the time they were separated by the ocean?

• A) A small group of individuals carrying only the tall allele established a new population on the right side of the ocean.
• B) The amount of gene flow between the two populations increased when the ocean separated the plants, so mutations moved from one population to another.
• C) When sea levels rose, it killed all of the plants on the right side of the figure. A new species evolved from another plant species already existing in the mountains on the right.
• D) The separated populations adapted to the different environments on each side of the ocean and became reproductively isolated.

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Definitions:

Economic Costs

Economic costs include both the explicit costs of production, such as raw materials and wages, and implicit costs, such as opportunity costs.

Explicit Costs

Direct, out-of-pocket payments for resources employed in the production of goods or services.

Implicit Costs

The opportunity costs of using resources owned by the firm for its own operations, without direct payment but with foregone opportunities.

Explicit Costs

Direct, out-of-pocket payments for wages, rent, and materials, among others, involved in the production of goods or services.