Jane and John Are Twins

question 77

Multiple Choice

Jane and John are twins. Based on what we know about gender differences in puberty, which of the following is most likely?

• A)Jane will grow 9 inches taller during the growth spurt.
• B)John will grow 6-7 inches taller during the growth spurt.
• C)Jane will have an increase in muscle compared to fat.
• D)John will have a decrease in body fat.

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Definitions:

Receptor Cells

Specialized cells that convert external stimuli into electrical signals for the nervous system to process.

Opponent-process Theory

Opponent-process theory is a psychological and neurological model that describes how the perception of one stimulus (color, emotion, pain) is dependent on the opposite function of its pair.

Ewald Hering

A 19th-century German physiologist who proposed the opponent-process theory of color vision.

Young-Helmholtz Theory

A theory of color vision that proposes the eye detects colors through the relative rates of response by three kinds of cones, each one sensitive to different wavelengths of light.