Question

Huntington’s disease is a genetic disorder that is caused by a dominant allele. Which of the following is true?
A. A person with Huntington’s disease will pass the disease onto 100% of their children.
B. A child who inherits one copy of the gene that causes Huntington’s disease will have the disease.
C. A child who inherits one copy of the gene that causes Huntington’s is a carrier for the disease.
D. Huntington’s disease tends to skip generations.

Answer 1

Answer: B

Explanation:

Answer 2

Answer:

The correct answer will be option B.

Explanation:

Huntington's disease is an autosomal dominant disorder that means even if there is only one copy of the gene is present, the person will be affected by this disorder. A person with Huntington's disease will pass the disease onto 50% on his children if another parent is with the normal gene. A person cannot be a carrier as only one copy of the gene is enough to affect the individual for the disorder.

Thus, the correct answer would be option B.