Professor Lutz Is Conducting Twin Studies of Generalized Anxiety Disorder

question 20

Multiple Choice

Professor Lutz is conducting twin studies of generalized anxiety disorder (GAD) .What is he most likely to find in terms of genetic influences for GAD?

• A)He is most likely to find a strong genetic influence.
• B)He is most likely to find a modest genetic influence.
• C)He is most likely to find an insignificant genetic influence.
• D)He is most likely to find no genetic influence.

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Definitions:

Visual Receptors

Visual receptors are cells located in the retina of the eye that are sensitive to light and enable vision.

Retina

The light-sensitive layer of tissue at the back of the inner eye, which converts light images into electrical signals sent to the brain.

Optic Nerve

The nerve that transmits visual information from the retina to the brain.

Ganglion Cell Axons

The long, threadlike part of a ganglion cell in the retina that transmits visual information from the eye to the brain.