When Monozygotic (MZ)twins Who Were Discordant for Schizophrenia Were Compared

question 125

Multiple Choice

When monozygotic (MZ) twins who were discordant for schizophrenia were compared with MZ twins who both had schizophrenia, researchers found that the MZ twins discordant for schizophrenia:

• A)possessed additional genetic material not found in members of the control group.
• B)had the exact same DNA structure, thereby implicating environmental factors.
• C)showed numerous differences in the molecular structure of their DNA.
• D)had few, but noticeable, variations in their genetic makeup.

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Definitions:

Ventromedial Hypothalamus

A region of the brain involved in regulating hunger, satiety, and the body's energy homeostasis.

Thalamus

A major part of the brain located in the center of the brain, acting as a relay station for sensory information and playing a key role in the regulation of consciousness, sleep, and alertness.

Glucagon-like Peptide-1

A hormone involved in the regulation of blood sugar levels by enhancing the secretion of insulin.

Vomiting

The involuntary, forceful expulsion of stomach contents through the mouth.