Skip Undergoes a Surgical Procedure in Which Electrodes Are Implanted

question 9

Multiple Choice

Skip undergoes a surgical procedure in which electrodes are implanted in his brain to reduce his tremors and other motor disturbances. Which disorder is most likely being treated?

• A) Huntington's disease
• B) Cerebral vascular disorder
• C) Parkinson's disease
• D) Alzheimer's disease

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Definitions:

Monozygotic Twins

Identical twins that result from the division of a single fertilized egg and share exactly the same genetic material.

Dizygotic Twins

Also known as fraternal twins, these are two siblings born from separate eggs and fertilized by different sperm cells, sharing about 50% of their DNA.

Twin-Study Design

A research method that compares the behaviours and traits of monozygotic (identical) and dizygotic (fraternal) twins to understand the influence of genetics versus environment.

Monozygotic Twins

Twins derived from a single fertilization event, resulting in siblings with identical genetic material.