What is the relationship of genetics to Huntington's disease?
A)It is caused by a dominant gene on the X chromosome.
B)It is caused by a dominant gene on chromosome 4.
C)It is caused by a recessive gene on one of the autosomal chromosomes.
D)There is no evidence linking Huntington's disease to any gene.

Question

​What is the relationship of genetics to Huntington's disease?
A)It is caused by a dominant gene on the X chromosome.
B)It is caused by a dominant gene on chromosome 4.​
C)It is caused by a recessive gene on one of the autosomal chromosomes.​
D)There is no evidence linking Huntington's disease to any gene.​

Quizplus · Accepted Answer

Huntington's disease is caused by a dominant gene on chromosome 4. This means that if a person inherits a single copy of the mutated gene from one parent, they will develop the disease. The gene codes for a protein called huntingtin, which gradually damages brain cells, leading to symptoms such as jerky body movements, cognitive decline, and psychiatric problems. There is currently no cure for Huntington's disease, but treatments can help manage symptoms. A genetic test is available to determine whether a person has the mutated gene, but individuals may choose not to take the test due to the high likelihood of developing the disease and lack of effective treatments.

​What Is the Relationship of Genetics to Huntington's Disease

What Is the Relationship of Genetics to Huntington's Disease