A child born to a parent with Huntington's disease has a ______% chance of developing the disorder.

Question

Quizplus · Accepted Answer

Huntington's disease is caused by a dominant mutation in the HTT gene on chromosome 4. If a person has one affected copy of the gene, they will develop the disease. Therefore, a child of a parent with Huntington's disease has a 50% chance of inheriting the affected copy of the gene and developing the disorder.

A Child Born to a Parent with Huntington's Disease Has