Average Heights of American Men and Women Have Increased Steadily

question 13

Multiple Choice

Average heights of American men and women have increased steadily since the 1940s.What is the best explanation for this observation?

• A)Height is a polygenic trait.
• B)Height is influenced by an X-linked gene.
• C)Height is influenced by environmental changes like improvements in diet.
• D)Height is influenced by a Y-linked gene.
• E)Height is influenced by crossing over.

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Definitions:

Machine Breakdowns

Occurrences where industrial or office machinery fails to operate, often leading to operational delays and the need for repairs.

Variable Factory Overhead

Costs in the production process that vary with the level of production output, such as utilities and materials.

Controllable Variance

The difference between actual and budgeted costs that management can influence through its actions.

Controllable Variance

A measure in accounting that represents the difference between actual costs and the budgeted amounts that management could control or influence.