Which Pair of Structures Best Represents Convergent Evolution

question 29

Multiple Choice

Which pair of structures best represents convergent evolution?

• A)the fusiform shape of a shark and a dolphin
• B)the bones in the forelimb of a horse and wing of a bat
• C)the bones in a human arm and flipper of a seal
• D)the tailbone of a human and the tail of a monkey
• E)the wing of a penguin and the wing of an eagle

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Definitions:

Variable Cost Ratio

The proportion of variable costs to sales, showing the impact of production volume on total costs.

Break-Even Point

The point at which total cost and total revenue are equal, meaning no net loss or gain, and one has "broken even."

Relevant Range

The range of activity within which the assumptions about fixed and variable cost behaviors hold true.

Contribution Margin

The difference between sales revenue and variable costs, measuring the ability of a business to cover its fixed costs.