Huntington's disease is caused by ______.
A) exposure to environmental toxins
B) inheriting two recessive genes from parents who carry the disease
C) the cumulative effects of multiple strokes
D) a single defective gene

Question

Quizplus · Accepted Answer

Huntington's disease is caused by a single defective gene, known as the Huntingtin gene, located on chromosome 4. A person only needs to inherit one copy of the defective gene from one parent to develop the disease. It is an autosomal dominant genetic disorder.

Huntington's Disease Is Caused by ______