sentence2_structure: A person<>affected<>by an autosomal dominant disorder$$$A person affected by an autosomal dominant disorder<>has<>one mutated allele
sentence1: Autosomal dominant disorders are produced by a single mutated dominant allele, even though its corresponding allele is normal.
sentence2: A person affected by an autosomal dominant disorder has one mutated allele.
question: What is needed for a person to be affected by an autosomal dominant disorder?