In Understanding the Trait of Shyness,a Behavioral Geneticist Will Argue

question 73

Multiple Choice

In understanding the trait of shyness,a behavioral geneticist will argue that:

• A) identical twins separated at birth will always have the same level of shyness
• B) genetics will determine two levels of shyness and environmental factors will determine which one actually occurs
• C) the influence of genetics on shyness is fixed
• D) genetics set a range for the level of shyness and environmental influences will interact with that range

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Definitions:

Cholecystokinin

A hormone released by the small intestine that stimulates the digestion of fat and protein, and also acts as a satiety signal to the brain.

Fat Cells

Cells that specialize in storing energy as fat, known scientifically as adipocytes, playing a significant role in metabolism and energy balance.

Serotonin

Serotonin is a neurotransmitter that plays a key role in regulating mood, appetite, sleep, memory, and other bodily functions.

Dopamine

A neurotransmitter involved in control of movement, emotion, motivation, and feelings of pleasure.