Final answer:
Autosomal dominant inheritance, a person only needs one copy of a gene to inherit a disorder.
Step-by-step explanation:
When discussing genetically inherited diseases, there are different inheritance patterns for transmitting these conditions from one generation to the next. Among these patterns is the autosomal dominant inheritance, where only one copy of a mutant gene is sufficient for an individual to be affected by the disorder.
Examples of such disorders include Huntington's disease, Marfan syndrome, and achondroplastic dwarfism. In contrast, autosomal recessive inheritance requires two copies of the mutant gene for the disease to manifest; individuals with just one copy are considered carriers and do not show symptoms.
Your question is incomplete but most probably your full question was
_______ inheritance, a person only needs one copy of a gene to inherit a disorder.