What is the dominant inheritance pattern associated with Huntington's disease?

Huntington's disease is primarily associated with a dominant inheritance pattern, specifically because it is caused by a mutation in a single gene located on an autosome. In this case, the disorder arises when an individual has just one copy of the mutated gene, which is found in the dominant form. This means that individuals who are heterozygous, carrying one normal allele and one mutated allele, will express the disease, regardless of the presence of the normal allele.

Furthermore, because it is an autosomal dominant condition, individuals do not need to inherit two copies of the mutant allele to manifest symptoms, as is the case with homozygous recessive or autosomal recessive traits. Thus, the correct understanding of this condition centers around the fact that having just one mutated allele—characteristic of the dominant inheritance pattern—is sufficient for the phenotypic expression of Huntington's disease.