Huntington's disease is a progressive neurodegenerative disorder that typically begins in middle age, although it can also onset earlier or later. It is caused by a dominant gene mutation on chromosome 4, meaning a person only needs one copy of the mutated gene from one parent to develop the disease. It is a terminal illness, meaning it eventually leads to death.

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Huntington's Disease

Question 90

Multiple Choice

Huntington's disease

A) often attacks people in their early teens.
B) is caused by a single recessive gene.
C) is caused by early exposure to huntingtin toxin.
D) usually attacks in early childhood.
E) is terminal.

Correct Answer: