Refer to the Figure Shown

question 60

Multiple Choice

Refer to the figure shown.
Which statement about the figure is true?

• A) It shows when icefish diverged from red-blooded fish.
• B) It shows the lineages of icefish that have lost functional myoglobin.
• C) It shows the lineages of icefish that have regained functional hemoglobin.
• D) It shows the lineages of Antarctic fish that use antifreeze proteins.

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Definitions:

MR = MC

An economic principle stating that optimal production level is reached when marginal revenue equals marginal cost.

Marginal Cost

The cost required to produce a subsequent unit of a product or service.

Marginal Cost Curve

A graphical representation showing how the cost of producing one additional unit of a good changes as production volume changes.

Short-run Supply

The total quantity of goods or services that producers are willing and able to sell at a given price in a short period.