Which of the Following Statements About Huntington Disease (HD)is True

Multiple Choice

Which of the following statements about Huntington disease (HD) is true ?

A) The disease is caused by a high number of repeated DNA triplets.
B) The gene responsible for the disease has not been located yet.
C) As the number of repeated triplets decreases, the severity of the symptoms increases.
D) People living around Lake Maracaibo in Venezuela show a very low frequency of HD.
E) Normal copies of the HD gene only have one copy of the DNA triplet.