Which Statement About Soapberry Bug Beaks Is True

question 17

Multiple Choice

Which statement about soapberry bug beaks is true?

• A) Beak length is not a heritable trait.
• B) Beak length has evolved in response to changes in the feeding habits of the soapberry bugs.
• C) Measurable changes in average beak length have occurred on a time scale of centuries, but are not detectable on a time scale of a few decades.
• D) Soapberry bugs feed on the same plant host species everywhere they occur, which is what makes it possible to study the evolution of beak length across their geographic range.

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Definitions:

Predetermined Overhead Rate

An estimated rate used to assign manufacturing overhead costs to products based on a certain activity (e.g., machine hours).

Variable Manufacturing Overhead

Costs of manufacturing that fluctuate with the level of production output, such as utility costs directly tied to machine operation.

Machine-Hours

A gauge for the level of production or activity, calculated through the duration machines are in use.

Manufacturing Overhead

Indirect costs related to manufacturing that are not directly tied to specific units produced, such as maintenance and utilities.