Huntington's Disease is an autosomal dominant disorder with progressive neural degeneration and dementia. The gene mutation of this disorder is a(n):
A) Deletion
B) Insertion
C) Triplet
D) Rearrangement
Ans: C
Feedback: Huntington's Disease is an autosomal dominant disorder with progressive neural degeneration and dementia. The gene mutation of this disorder is a triplet or trinucleotide repeat. This involves the expansion of more than the usual number of a triplet sequence in a gene. Other gene mutations may be larger, such as deletion (loss), insertion (addition), duplication (multiplication), or rearrangement (translocation) of a longer DNA segment.
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