________ is a degenerative disorder involving a defective gene on chromosome 4 that results in jerky uncontrollable movements.
A) Down syndrome
B) Tay-Sachs disease
C) Meissner's syndrome
D) Huntington's disease
E) Parkinson's disease

Question

Quizplus · Accepted Answer

Huntington's disease is a degenerative disorder caused by a defective gene on chromosome 4 that leads to involuntary, jerky movements called chorea, as well as cognitive and behavioral changes. Down syndrome is a genetic disorder caused by an extra copy of chromosome 21, Tay-Sachs disease is a genetic disorder that affects the nervous system, Meissner's syndrome is not a recognized disorder, and Parkinson's disease is a neurodegenerative disorder characterized by tremors, stiffness, and difficulty with movement.

________ Is a Degenerative Disorder Involving a Defective Gene on Chromosome